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[Csnd] Question about lfo and linsegr

Date2019-02-08 20:23
Frombrian@AMSYNTH.COM
Subject[Csnd] Question about lfo and linsegr

Hi everyone,

it appears that the lfo opcode provides a sinewave that is bipolar. Is there a unipolar alternative?

Also, I've been using linsegr for envelopes, but it has the limitation that the sustain point must be the second-to-last step. Is there an alternative that allows the sustain point to be assignable to other points?

 

Thanks in advance!

brian

 
Date2019-02-08 20:34
Fromjohn
SubjectRe: [Csnd] Question about lfo and linsegr

On Fri, 8 Feb 2019, brian@AMSYNTH.COM wrote:

> 
> Hi everyone,
> 
> it appears that the lfo opcode provides a sinewave that is bipolar. Is there a
> unipolar alternative?
>


Just add kamp to the output


> Also, I've been using linsegr for envelopes, but it has the limitation that
> the sustain point must be the second-to-last step. Is there an alternative
> that allows the sustain point to be assignable to other points?
> 
>  

If it is the sustain point what are you expecting after?  If using score 
then using linseg (or expseg etc) and arithmeric involving p3 usually 
works.  If midi then I am out of my experience.

Maybe I just do not understand what you want.

==John ff

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Date2019-02-08 20:42
FromGuillermo Senna
SubjectRe: [Csnd] Question about lfo and linsegr
A combination of linseg and xtratim? linseg is supposed to keep the last
value.


On 8/2/19 17:34, john wrote:
>
>
> On Fri, 8 Feb 2019, brian@AMSYNTH.COM wrote:
>
>>
>> Hi everyone,
>>
>> it appears that the lfo opcode provides a sinewave that is bipolar.
>> Is there a
>> unipolar alternative?
>>
>
>
> Just add kamp to the output
>
>
>> Also, I've been using linsegr for envelopes, but it has the
>> limitation that
>> the sustain point must be the second-to-last step. Is there an
>> alternative
>> that allows the sustain point to be assignable to other points?
>>
>>  
>
> If it is the sustain point what are you expecting after?  If using
> score then using linseg (or expseg etc) and arithmeric involving p3
> usually works.  If midi then I am out of my experience.
>
> Maybe I just do not understand what you want.
>
> ==John ff
>
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>        https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here

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Date2019-02-08 20:43
Frombrian@AMSYNTH.COM
SubjectRe: [Csnd] Question about lfo and linsegr

Hi John,

ok, I'll try adding kamp (never would have thought of that!).

As for linsegr, I am using midi, yes. My thought was to have sustain at one point, and upon release, successive attacks and decays. Kind of like the CZ synths of the 80s, which used "rate" and "level" points for each envelope step, rather than a traditional adsr profile.

 

brian

 

On Fri, 8 Feb 2019 20:34:19 +0000, john wrote:

On Fri, 8 Feb 2019, brian@AMSYNTH.COMwrote:
Hi everyone, it appears that the lfo opcode provides a sinewave that is bipolar. Is there a unipolar alternative?
Just add kamp to the output
Also, I've been using linsegr for envelopes, but it has the limitation that the sustain point must be the second-to-last step. Is there an alternative that allows the sustain point to be assignable to other points?  
If it is the sustain point what are you expecting after?  If using score 
then using linseg (or expseg etc) and arithmeric involving p3 usually 
works.  If midi then I am out of my experience.

Maybe I just do not understand what you want.

==John ff

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Date2019-02-08 21:10
Frombrian@AMSYNTH.COM
SubjectRe: [Csnd] Question about lfo and linsegr

Hi Guillermo,

thanks for the suggestion; I tested out the xtratim examples in the Csound manual, but unfortunately they seem to just give a longish release, and nothing more.

 

brian

 

On Fri, 8 Feb 2019 17:42:28 -0300, Guillermo Senna wrote:

A combination of linseg and xtratim? linseg is supposed to keep the last
value.


On 8/2/19 17:34, john wrote:
On Fri, 8 Feb 2019, brian@AMSYNTH.COMwrote:
Hi everyone, it appears that the lfo opcode provides a sinewave that is bipolar. Is there a unipolar alternative?
Just add kamp to the output
Also, I've been using linsegr for envelopes, but it has the limitation that the sustain point must be the second-to-last step. Is there an alternative that allows the sustain point to be assignable to other points?  
If it is the sustain point what are you expecting after?  If using score then using linseg (or expseg etc) and arithmeric involving p3 usually works.  If midi then I am out of my experience. Maybe I just do not understand what you want. ==John ff Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to        https://github.com/csound/csound/issues Discussions of bugs and features can be posted here
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Date2019-02-08 21:16
FromGuillermo Senna
SubjectRe: [Csnd] Question about lfo and linsegr
Could you post the envelope you are working with?


On 8/2/19 18:10, brian@AMSYNTH.COM wrote:
>   
>
> Hi Guillermo, 
>
> thanks for the suggestion; I tested out the xtratim
> examples in the Csound manual, but unfortunately they seem to just give
> a longish release, and nothing more. 
>
> brian 
>
> On Fri, 8 Feb 2019
> 17:42:28 -0300, Guillermo Senna wrote: 
>
>> A combination of linseg and
> xtratim? linseg is supposed to keep the last
>> value.
>>
>> On 8/2/19
> 17:34, john wrote:
>>> On Fri, 8 Feb 2019, brian@AMSYNTH.COM [1]wrote:
>>>> Hi everyone, it appears that the lfo opcode provides a sinewave
> that is bipolar. Is there a unipolar alternative?
>>> Just add kamp to
> the output 
>>>> Also, I've been using linsegr for envelopes, but it
> has the limitation that the sustain point must be the second-to-last
> step. Is there an alternative that allows the sustain point to be
> assignable to other points?
>>> If it is the sustain point what are you
> expecting after? If using score then using linseg (or expseg etc) and
> arithmeric involving p3 usually works. If midi then I am out of my
> experience. Maybe I just do not understand what you want. ==John ff
> Csound mailing list Csound@listserv.heanet.ie [2]
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [3] Send bugs reports to
> https://github.com/csound/csound/issues [4] Discussions of bugs and
> features can be posted here
>> Csound mailing list
>>
> Csound@listserv.heanet.ie [5]
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [6]
>> Send bugs reports
> to
>> https://github.com/csound/csound/issues [7]
>> Discussions of bugs
> and features can be posted here
>
>   
>
> Links:
> ------
> [1]
> mailto:brian@AMSYNTH.COM
> [2] mailto:Csound@listserv.heanet.ie
> [3]
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Date2019-02-08 21:25
Frombrian@AMSYNTH.COM
SubjectRe: [Csnd] Question about lfo and linsegr

It's currently nothing special.. something like this:

kenva1    linsegr    0,    0.01,0.9,    0.5,0.5,    0.14,0

I'd like to extend it like this, with the sustain point at the asterisk:

kenva1    linsegr    0,    0.01,0.9,    0.5,0.5,*   0.01,0.9,    0.5,0.5,   0.3,0.8,    0.6,0.3,    0.14,0

 

Just to give a rough idea of the concept..

 

brian

 

On Fri, 8 Feb 2019 18:16:00 -0300, Guillermo Senna wrote:

Could you post the envelope you are working with?


On 8/2/19 18:10, brian@AMSYNTH.COMwrote:
Hi Guillermo, thanks for the suggestion; I tested out the xtratim examples in the Csound manual, but unfortunately they seem to just give a longish release, and nothing more. brian On Fri, 8 Feb 2019 17:42:28 -0300, Guillermo Senna wrote:
A combination of linseg and
xtratim? linseg is supposed to keep the last
value. On 8/2/19
17:34, john wrote:
On Fri, 8 Feb 2019, brian@AMSYNTH.COM[1]wrote:
Hi everyone, it appears that the lfo opcode provides a sinewave
that is bipolar. Is there a unipolar alternative?
Just add kamp to
the output
Also, I've been using linsegr for envelopes, but it
has the limitation that the sustain point must be the second-to-last step. Is there an alternative that allows the sustain point to be assignable to other points?
If it is the sustain point what are you
expecting after? If using score then using linseg (or expseg etc) and arithmeric involving p3 usually works. If midi then I am out of my experience. Maybe I just do not understand what you want. ==John ff Csound mailing list Csound@listserv.heanet.ie [2] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [3] Send bugs reports to https://github.com/csound/csound/issues[4] Discussions of bugs and features can be posted here
Csound mailing list
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Send bugs reports
to
https://github.com/csound/csound/issues [7] Discussions of bugs
and features can be posted here Links: ------ [1] mailto:brian@AMSYNTH.COM [2] mailto:Csound@listserv.heanet.ie [3] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [4] https://github.com/csound/csound/issues [5] mailto:Csound@listserv.heanet.ie [6] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [7] https://github.com/csound/csound/issues Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here
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Date2019-02-08 21:29
Fromjohn
SubjectRe: [Csnd] Question about lfo and linsegr
You should be able to roll your own with use of te release opode but it is 
not easy.  Iway thinking of xtratin and a new linseg for post-release 
activity.

But might be complicated.  There must be a csiound expert who can do this.

==John ff

On Fri, 8 Feb 2019, brian@AMSYNTH.COM wrote:

> 
> Hi Guillermo,
> 
> thanks for the suggestion; I tested out the xtratim examples in the Csound
> manual, but unfortunately they seem to just give a longish release, and
> nothing more.
> 
>  
> 
> brian
> 
>  

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Date2019-02-08 22:57
FromGuillermo Senna
SubjectRe: [Csnd] Question about lfo and linsegr
Attachmentsxtratim.csd  
I've adapted the xtratim example found on the manual. There are probably
a lot of easier ways to do it!

I didn't optimize for the number of variables used; I created them as I
needed them.


On 8/2/19 18:25, brian@AMSYNTH.COM wrote:
>   
>
> It's currently nothing special.. something like this: 
>
> kenva1
> linsegr 0, 0.01,0.9, 0.5,0.5, 0.14,0 
>
> I'd like to extend it like this,
> with the sustain point at the asterisk: 
>
> kenva1 linsegr 0, 0.01,0.9,
> 0.5,0.5,* 0.01,0.9, 0.5,0.5, 0.3,0.8, 0.6,0.3, 0.14,0 
>
> Just to give a
> rough idea of the concept.. 
>
> brian 
>
> On Fri, 8 Feb 2019 18:16:00 -0300,
> Guillermo Senna wrote: 
>
>> Could you post the envelope you are working
> with?
>> On 8/2/19 18:10, brian@AMSYNTH.COM [10]wrote:
>>
>>> Hi
> Guillermo, thanks for the suggestion; I tested out the xtratim examples
> in the Csound manual, but unfortunately they seem to just give a longish
> release, and nothing more. brian On Fri, 8 Feb 2019 17:42:28 -0300,
> Guillermo Senna wrote: 
>>>> A combination of linseg and
>>> xtratim?
> linseg is supposed to keep the last 
>>>> value. On 8/2/19
>>> 17:34,
> john wrote: On Fri, 8 Feb 2019, brian@AMSYNTH.COM [1][1]wrote: 
>>>>> Hi everyone, it appears that the lfo opcode provides a
> sinewave
>>>> that is bipolar. Is there a unipolar alternative?
> er-left:#1010ff 2px solid; margin-left:5px; width:100%"> 
>>> left:5px;
> width:100%"> Also, I've been using linsegr for envelopes, but it has the
> limitation that the sustain point must be the second-to-last step. Is
> there an al
>>>> ding-left:5px; border-left:#1010ff 2px solid;
> margin-left:5px; width:100%"> 
>>>>> If it is the sustain point what
> are you
>>>> expecting after? If using score then using linse
>>> etc) and
> arithmeric involving p3 usually works. If midi then I am out of my
> experience. Maybe I just do not understand what you want. ==John ff
> Csound mailing list Csound@listserv.heanet.ie [2] [2]
> https://listserv.heanet.ie/cgi-bin/wa?A0=
>>>> nd/csound/issues[4]
> Discussions of bugs and features can be posted here
>>> h:100%">Csound
> mailing list Csound@listserv.heanet.ie [3] [5]
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [4][6] Send bugs reports
> to https://github.com/csound/csound/issues [5] [7] Discussions of bugs
> and features can be posted here Links: ------ [1]
> mailto:brian@AMSYNTH.COM [6] [2] mailto:Csound@listserv
> in/wa?A0=CSOUND
> "https://github.com/csound/csound/issues">https://github.com/csound/csound/issues
> [5] mailto:Csound@listserv.heanet.ie [7] [6]
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [8] [7]
> https://github.com/csound/csound/issues [9] Csound mail
> eanet.ie/cgi-bin/
>>>> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>> Csound mailing list
>>
> Csound@listserv.heanet.ie [11]
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [12]
>> Send bugs reports
> to
>> https://github.com/csound/csound/issues [13]
>> Discussions of bugs
> and features can be posted here
>
>   
>
> Links:
> ------
> [1]
> mailto:brian@AMSYNTH.COM
> [2] mailto:Csound@listserv.heanet.ie
> [3]
> mailto:Csound@listserv.heanet.ie
> [4]
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> [5]
> https://github.com/csound/csound/issues
> [6] mailto:brian@AMSYNTH.COM
> [7]
> mailto:Csound@listserv.heanet.ie
> [8]
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> [9]
> https://github.com/csound/csound/issues
> [10]
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> [12]
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> [13]
> https://github.com/csound/csound/issues
>
> Csound mailing list
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> Discussions of bugs and features can be posted here
>

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Date2019-02-08 23:19
FromGuillermo Senna
SubjectRe: [Csnd] Question about lfo and linsegr
I apologize. Line 37 should be:

      kEnvRel = kLastEnv + (0.9-kLastEnv)/(kr*0.01) * kStep

On 8/2/19 19:57, Guillermo Senna wrote:
> I've adapted the xtratim example found on the manual. There are probably
> a lot of easier ways to do it!
>
> I didn't optimize for the number of variables used; I created them as I
> needed them.
>
>
> On 8/2/19 18:25, brian@AMSYNTH.COM wrote:
>>   
>>
>> It's currently nothing special.. something like this: 
>>
>> kenva1
>> linsegr 0, 0.01,0.9, 0.5,0.5, 0.14,0 
>>
>> I'd like to extend it like this,
>> with the sustain point at the asterisk: 
>>
>> kenva1 linsegr 0, 0.01,0.9,
>> 0.5,0.5,* 0.01,0.9, 0.5,0.5, 0.3,0.8, 0.6,0.3, 0.14,0 
>>
>> Just to give a
>> rough idea of the concept.. 
>>
>> brian 
>>
>> On Fri, 8 Feb 2019 18:16:00 -0300,
>> Guillermo Senna wrote: 
>>
>>> Could you post the envelope you are working
>> with?
>>> On 8/2/19 18:10, brian@AMSYNTH.COM [10]wrote:
>>>
>>>> Hi
>> Guillermo, thanks for the suggestion; I tested out the xtratim examples
>> in the Csound manual, but unfortunately they seem to just give a longish
>> release, and nothing more. brian On Fri, 8 Feb 2019 17:42:28 -0300,
>> Guillermo Senna wrote: 
>>>>> A combination of linseg and
>>>> xtratim?
>> linseg is supposed to keep the last 
>>>>> value. On 8/2/19
>>>> 17:34,
>> john wrote: On Fri, 8 Feb 2019, brian@AMSYNTH.COM [1][1]wrote: 
>>>>>> Hi everyone, it appears that the lfo opcode provides a
>> sinewave
>>>>> that is bipolar. Is there a unipolar alternative?
>> er-left:#1010ff 2px solid; margin-left:5px; width:100%"> 
>>>> left:5px;
>> width:100%"> Also, I've been using linsegr for envelopes, but it has the
>> limitation that the sustain point must be the second-to-last step. Is
>> there an al
>>>>> ding-left:5px; border-left:#1010ff 2px solid;
>> margin-left:5px; width:100%"> 
>>>>>> If it is the sustain point what
>> are you
>>>>> expecting after? If using score then using linse
>>>> etc) and
>> arithmeric involving p3 usually works. If midi then I am out of my
>> experience. Maybe I just do not understand what you want. ==John ff
>> Csound mailing list Csound@listserv.heanet.ie [2] [2]
>> https://listserv.heanet.ie/cgi-bin/wa?A0=
>>>>> nd/csound/issues[4]
>> Discussions of bugs and features can be posted here
>>>> h:100%">Csound
>> mailing list Csound@listserv.heanet.ie [3] [5]
>> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [4][6] Send bugs reports
>> to https://github.com/csound/csound/issues [5] [7] Discussions of bugs
>> and features can be posted here Links: ------ [1]
>> mailto:brian@AMSYNTH.COM [6] [2] mailto:Csound@listserv
>> in/wa?A0=CSOUND
>> "https://github.com/csound/csound/issues">https://github.com/csound/csound/issues
>> [5] mailto:Csound@listserv.heanet.ie [7] [6]
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>> https://github.com/csound/csound/issues [9] Csound mail
>> eanet.ie/cgi-bin/
>>>>> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
>> Send bugs reports to
>>> Csound mailing list
>>>
>> Csound@listserv.heanet.ie [11]
>> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [12]
>>> Send bugs reports
>> to
>>> https://github.com/csound/csound/issues [13]
>>> Discussions of bugs
>> and features can be posted here
>>
>>   
>>
>> Links:
>> ------
>> [1]
>> mailto:brian@AMSYNTH.COM
>> [2] mailto:Csound@listserv.heanet.ie
>> [3]
>> mailto:Csound@listserv.heanet.ie
>> [4]
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>> [5]
>> https://github.com/csound/csound/issues
>> [6] mailto:brian@AMSYNTH.COM
>> [7]
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>> [8]
>> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
>> [9]
>> https://github.com/csound/csound/issues
>> [10]
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>> [11] mailto:Csound@listserv.heanet.ie
>> [12]
>> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
>> [13]
>> https://github.com/csound/csound/issues
>>
>> Csound mailing list
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Date2019-02-09 11:56
Frombrian@AMSYNTH.COM
SubjectRe: [Csnd] Question about lfo and linsegr

Hi Guillermo,

I tried your file just now (with line 37 adjusted as you said), and it seems to be on the right track.

If you try the code here below (I adjusted the audio options for use on my pc) you wil see that the final relase stage of "0.9, 0" is quite fast, when it is supposed to be slow. Also, you will hear that when a note sustain is released, the amplitude rises slightly before decreasing, which it shouldn't.

 

<CsoundSynthesizer>
 
<CsOptions>
; Select audio/midi flags here according to platform
; Audio out   Audio in    Silent  MIDI in
-odac       -+rtaudio=jack -+rtmidi=alsa      -Ma  ;;;realtime I/O
</CsOptions>
 
<CsInstruments>
;Simple usage of the xtratim opcode
sr = 48000
ksmps = 10
nchnls = 2
0dbfs=1  
 
instr 1
 
  inum notnum
  icps cpsmidi
  iamp ampmidi 0.5
 
  xtratim 1.55  
  kEnvRel init 0
  if (release:k() != 1) then
    kEnv linseg 0, 0.01,0.9, 0.5, 0.5
  else
    kEnvRel linseg 0, 0.01, 0, 0, 0.9, 0.5,0.5, 0.7,0.1, 0.6,0.9, 0.9,0  
 
    kStep init 0
 
    if kStep == 0 then
      kLastEnv = kEnv
      kEnv = 0
    endif     
 
    if kStep <= (kr*0.01) then
      kEnvRel = kLastEnv + (0.9-kLastEnv)/(kr*0.01) * kStep
      kStep += 1
    endif
 
  endif
 
  a1 oscili (kEnv+kEnvRel)*iamp, icps
  outs a1, a1
 endin
 
</CsInstruments>
 
<CsScore>
f 0 3600  
e
</CsScore>
 
</CsoundSynthesizer>

 

brian



 

On Fri, 8 Feb 2019 20:19:52 -0300, Guillermo Senna wrote:

I apologize. Line 37 should be:

      kEnvRel = kLastEnv + (0.9-kLastEnv)/(kr*0.01) * kStep

On 8/2/19 19:57, Guillermo Senna wrote:
I've adapted the xtratim example found on the manual. There are probably a lot of easier ways to do it! I didn't optimize for the number of variables used; I created them as I needed them. On 8/2/19 18:25, brian@AMSYNTH.COMwrote:
It's currently nothing special.. something like this: kenva1 linsegr 0, 0.01,0.9, 0.5,0.5, 0.14,0 I'd like to extend it like this, with the sustain point at the asterisk: kenva1 linsegr 0, 0.01,0.9, 0.5,0.5,* 0.01,0.9, 0.5,0.5, 0.3,0.8, 0.6,0.3, 0.14,0 Just to give a rough idea of the concept.. brian On Fri, 8 Feb 2019 18:16:00 -0300, Guillermo Senna wrote:
Could you post the envelope you are working
with?
On 8/2/19 18:10, brian@AMSYNTH.COM[10]wrote:
Hi
Guillermo, thanks for the suggestion; I tested out the xtratim examples in the Csound manual, but unfortunately they seem to just give a longish release, and nothing more. brian On Fri, 8 Feb 2019 17:42:28 -0300, Guillermo Senna wrote:
A combination of linseg and
xtratim?
linseg is supposed to keep the last
value. On 8/2/19
17:34,
john wrote: On Fri, 8 Feb 2019, brian@AMSYNTH.COM[1][1]wrote:
Hi everyone, it appears that the lfo opcode provides a
sinewave
that is bipolar. Is there a unipolar alternative?
er-left:#1010ff 2px solid; margin-left:5px; width:100%">
left:5px;
width:100%"> Also, I've been using linsegr for envelopes, but it has the limitation that the sustain point must be the second-to-last step. Is there an al
ding-left:5px; border-left:#1010ff 2px solid;
margin-left:5px; width:100%">
If it is the sustain point what
are you
expecting after? If using score then using linse
etc) and
arithmeric involving p3 usually works. If midi then I am out of my experience. Maybe I just do not understand what you want. ==John ff Csound mailing list Csound@listserv.heanet.ie [2] [2] https://listserv.heanet.ie/cgi-bin/wa?A0=
nd/csound/issues[4]
Discussions of bugs and features can be posted here
h:100%">Csound
mailing list Csound@listserv.heanet.ie [3] [5] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [4][6] Send bugs reports to https://github.com/csound/csound/issues [5] [7] Discussions of bugs and features can be posted here Links: ------ [1] mailto:brian@AMSYNTH.COM [6] [2] mailto:Csound@listserv in/wa?A0=CSOUND "https://github.com/csound/csound/issues">https://github.com/csound/csound/issues [5] mailto:Csound@listserv.heanet.ie [7] [6] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [8] [7] https://github.com/csound/csound/issues[9] Csound mail eanet.ie/cgi-bin/
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
Send bugs reports to
Csound mailing list
Csound@listserv.heanet.ie [11] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND[12]
Send bugs reports
to
https://github.com/csound/csound/issues [13] Discussions of bugs
and features can be posted here Links: ------ [1] mailto:brian@AMSYNTH.COM [2] mailto:Csound@listserv.heanet.ie [3] mailto:Csound@listserv.heanet.ie [4] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [5] https://github.com/csound/csound/issues [6] mailto:brian@AMSYNTH.COM [7] mailto:Csound@listserv.heanet.ie [8] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [9] https://github.com/csound/csound/issues [10] mailto:brian@AMSYNTH.COM [11] mailto:Csound@listserv.heanet.ie [12] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [13] https://github.com/csound/csound/issues Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here
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Date2019-02-09 16:48
FromGuillermo Senna
SubjectRe: [Csnd] Question about lfo and linsegr
Yes, that's because every time you change the 'kEnvRel linseg ...' line
you have to sum the durations of the segments in that line and pass that
value to xtratim. Here's instr1, now with two more variable!

instr 1

  inum  notnum
  icps  cpsmidi
  iamp  ampmidi 0.5

  itim1 = 0.01
  iamp1 = 0.9
 
  xtratim 2.71 ; the sum of durations in the release linseg.
 
  kEnvRel init 0
 
  if (release:k() != 1) then

    kEnv    linseg  0, 0.01, 0.9, 0.5, 0.5

  else
    kEnvRel linseg 0, itim1, 0,  0, iamp1, 0.5,   0.5,  0.7,   0.1,
0.6,   0.9,  0.9,     0

    kStep init 0

    if kStep == 0 then
      kLastEnv = kEnv
      kEnv = 0

  endif   

    if kStep <= (kr*itim1) then
      kEnvRel = kLastEnv + (iamp1-kLastEnv)/(kr*itim1) * kStep
      kStep += 1
    endif

  endif
  a1 oscili (kEnv+kEnvRel)*iamp, icps
  outs a1, a1
endin



On 9/2/19 08:56, brian@AMSYNTH.COM wrote:
>   
>
> Hi Guillermo, 
>
> I tried your file just now (with line 37 adjusted
> as you said), and it seems to be on the right track. 
>
> If you try the
> code here below (I adjusted the audio options for use on my pc) you wil
> see that the final relase stage of "0.9, 0" is quite fast, when it is
> supposed to be slow. Also, you will hear that when a note sustain is
> released, the amplitude rises slightly before decreasing, which it
> shouldn't. 
>
> ; Select audio/midi flags here according to platform 
> ;
> Audio out Audio in Silent MIDI in 
> -odac -+rtaudio=jack -+rtmidi=alsa
> -Ma ;;;realtime I/O 
>
> ;Simple usage of the xtratim opcode 
> sr = 48000
>
> ksmps = 10 
> nchnls = 2 
> 0dbfs=1 
>
> instr 1 
>
>  inum notnum 
>  icps cpsmidi
>
>  iamp ampmidi 0.5 
>
>  xtratim 1.55 
>  kEnvRel init 0 
>  if (release:k() !=
> 1) then 
>  kEnv linseg 0, 0.01,0.9, 0.5, 0.5 
>  else 
>  kEnvRel linseg 0,
> 0.01, 0, 0, 0.9, 0.5,0.5, 0.7,0.1, 0.6,0.9, 0.9,0 
>
>  kStep init 0 
>
>  if
> kStep == 0 then 
>  kLastEnv = kEnv 
>  kEnv = 0 
>  endif 
>
>  if kStep  I
> apologize. Line 37 should be:
>> kEnvRel = kLastEnv +
> (0.9-kLastEnv)/(kr*0.01) * kStep
>> On 8/2/19 19:57, Guillermo Senna
> wrote:
>>> I've adapted the xtratim example found on the manual. There
> are probably a lot of easier ways to do it! I didn't optimize for the
> number of variables used; I created them as I needed them. On 8/2/19
> 18:25, brian@AMSYNTH.COM [23]wrote: 
>>>> It's currently nothing
> special.. something like this: kenva1 linsegr 0, 0.01,0.9, 0.5,0.5,
> 0.14,0 I'd like to extend it like this, with the sustain point at the
> asterisk: kenva1 linsegr 0, 0.01,0.9, 0.5,0.5,* 0.01,0.9, 0.5,0.5,
> 0.3,0.8, 0.6,0.3, 0.14,0 Just to give a rough idea of the concept..
> brian On Fri, 8 Feb 2019 18:16:00 -0300, Guillermo Senna wrote: 
>>>>> Could you post the envelope you are working
>>>> with? 
>>>>
> On 8/2/19 18:10, brian@AMSYNTH.COM [1][10]wrote: 
>>>>>> Hi
> Guillermo, thanks for the suggestion; I tested out the xtratim examples
> in the Csound manual, but unfortunately they seem to just give a longish
> release, and nothing more. brian On Fri, 8 Feb 2019 17:42:28 -0300,
> Guillermo Senna wrote: 
>>>>>> A combination of linseg and
> xtratim? linseg is supposed to keep the last
>>>> f 2px solid;
> margin-left:5px; width:100%"> value. On 8/2/19>
> brian@AMSYNTH.COM[1][1]wrote:
>>>> ="padding-left:5px;
> border-left:#1010ff 2px solid; margin-left:5px; width:100%"> Hi
> everyone, it appears that the lfo opcode provides a sinewave 
>>>>>> that is bipolar. Is there a unipolar alternative?
> er-left:#1010ff 2px solid; margin-left:5px; width:100%">
> ="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px;
> width:100%">left:5px; width:100%"> Also, I've been using linsegr for
> envelopes, but it has the limitation that the sustain point must be the
> second-to-last step. Is there an al 
>>>>>> ding-left:5px;
> border-left:#1010ff 2px solid;
>>>>> margin-left:5px; width:100%">
> border-left:#1010ff 2px solid; margin-left:5px; width:100%"> If it is
> the sustain 
>>>>> "padding-left:5px; border-left:#1010ff 2px solid;
> margin-left:5px; width:100%">
>>>> f 2px solid; margin-left:5px;
> width:100%"> expecting after? If using score then using linse etc) and
> arithmeric involving p3 usually works. If midi then I am out of my
> experience. Maybe I just do not understand what you want. ==John ff
> Csound mailing list https://listserv.heanet.ie/cgi-bin/wa?A0=
> "padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px;
> width:100%">nd/csound/issues[4] Discussions of bugs and features can be
> po
>>>>> idth:100%"> 
>>>>>
>>>>>> h:100%">Csound
>>>>> mailing list
> Csound@listserv.heanet.ie [2] [3] [5]
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [3] [4][6] Send bugs
> reports to
> ub.com/csound/csound/issues">https://github.com/csound/csound/issues [5]
> [7] Discussions of bugs and features can be posted here Links: ------
> [1] mailto:brian@AMSYNTH.COM [7] [6] [2] mailto:Csound@listserv
> in/wa?A0=CSOUND "https://github.com/csound/csound/issues
> to:Csound@listserv.heanet.ie [4] [7] [6]
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [5] [8] [7]
> https://github.com/csound/csound/issues [6][9] Csound ma
>>>> gi-bin/
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [8] Send bugs reports to
> Csound mailing list
> eanet.ie/cgi-bin/wa?A0=CSOUND">https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND[12]
>
>>>>>> Send bugs reports
>>>>> to
>>>> rder-left:#1010ff 2px solid;
> margin-left:5px; width:100%">https://github.com/csound/csound/issues [9]
> [13] Discussions of bugs and features can be posted here Links: ------
> [1] mailto:brian@AMSYNTH.COM [10] [2] mai
> d@listserv.heanet.ie">Csound@listserv.heanet.ie [4]
> https://listserv.heanet.ie/cg
>>>> SOUND [5]
> https://github.com/csound/csound/issues [11] [6]
> mailto:brian@AMSYNTH.COM [12] [7] mailto:Csound@listserv.heanet.ie [13]
> [8] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [14] [9]
> https://github.com/csound/csound/issues [15] [10]
> mailto:brian@AMSYNTH.COM [16] [11] mailto:Csound@listserv.heanet.ie [17]
> [12] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [18] [13]
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> to https://github.com/csound/csound/issues [22] Discussions of bugs and
> features can be posted here
>> Csound mailing list
>> Csound@listserv.heanet.ie [24]
>>
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [25]
>> Send bugs reports
> to
>> https://github.com/csound/csound/issues [26]
>> Discussions of bugs
> and features can be posted here
>
>   
>
> Links:
> ------
> [1]
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> [11]
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> [12]
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Date2019-02-15 12:58
Frombrian@AMSYNTH.COM
SubjectRe: [Csnd] Question about lfo and linsegr

I'm not sure what you mean by adding kamp to the output. All I have been able to do so far is to add the LFO to the amplitude, but that just adds a tremolo effect, which I don't want yet.  Can you show me where to make the changes?

Here is the instrument I'm using:

 

<CsoundSynthesizer>
<CsOptions>

-odac -+rtaudio=jack -+rtmidi=alsa -Ma -dm0
</CsOptions>
<CsInstruments>

sr=48000
ksmps=64
nchnls=2
0dbfs=1

;panel
FLcolor        233, 185, 110, 0, 0, 0
FLpanel     "ZSynth-MoogVCF-ModWheel LFO",1010,550,300,100,4,-1,1
FLvkeybd    "keyboard.map",960,90,20,430
gkonoff,ihb2    FLbutton "On/Off",0,1,2,100,30,20,20,0,1,0,0
gk3,ihb4    FLbutton "Exit",1,0,21,100,30,20,70,0,2,0,0


;displays for Cut-Q-LFO Flsliders
ihval1    FLvalue    "",60,30,520,20
ihval2    FLvalue "",60,30,520,70
ihval3    FLvalue "",60,30,520,120
ihval3b    FLvalue "",60,30,520,155

;display for Detune Flknob
ihval3c    FLvalue "",60,30,110,135

;displays for Amp Env Flsliders
ihval4    FLvalue "",60,30,260,120+80
ihval5    FLvalue "",60,30,260,120+130
ihval6    FLvalue "",60,30,260,120+180
ihval7    FLvalue "",60,30,260,120+230

;displays for Fil Env Flsliders
ihval8    FLvalue "",60,30,520,120+80
ihval9    FLvalue "",60,30,520,120+130
ihval10    FLvalue "",60,30,520,120+180
ihval11    FLvalue "",60,30,520,120+230


;kout,ihandle    Flslider  "", imin, imax, iexp, itype, idisp, iwidth, iheight,  ix, iy

gkfreq,gih1 FLslider    "Cutoff", 1, (sr)/2, 0, 25, ihval1, 355, 25, 143, 20
gkreso,gih2 FLslider    "Resonance", 0.1, 0.99, 0, 25, ihval2, 355, 25, 143, 70
gklfo,gih3  FLslider    "LFO-level", 0, 30, 0, 25, ihval3, 155, 25, 343, 120
gkrate,gih3b FLslider    "LFO-rate", 0, 30, 0, 25, ihval3b, 155, 25, 343, 160
gkdet,gih3c   FLknob   "Detune", 0, 4.0, 0, 1, ihval3c, 60, 40, 120
;FLTK-COUNTERS                        MIN | MAX | STEP1 | STEP2 | TYPE | WIDTH | HEIGHT | X | Y | OPCODE
gkBendRange, ihBendRange     FLcount  "Bend Range",    -48,   48,    1,      1,      2,     100,     25,  210, 120,   -1


;adsr volume
gkatt,gih4    FLslider    "A. attack",0.01, 2, 0, 25, ihval4, 155, 30, 90, 200
gkdec,gih5    FLslider    "A. decay",0, 2, 0, 25, ihval5, 155, 30, 90, 250
gksus,gih6    FLslider    "A. sustain",0.001, 1, 0, 25, ihval6, 155, 30, 90, 300
gkrel,gih7    FLslider    "A. release",0, 4, 0, 25, ihval7, 155, 30, 90, 350

;adsr moog filter
gkatt2,gih8    FLslider    "F. attack",0.01, 2, 0, 25, ihval8, 155, 30, 343, 200
gkdec2,gih9    FLslider    "F. decay",0, 2, 0, 25, ihval9, 155, 30, 343, 250
gksus2,gih10    FLslider    "F. sustain",0.001, 1, 0, 25, ihval10, 155, 30, 343, 300
gkrel2,gih11    FLslider    "F. release",0, 4, 0, 25, ihval11, 155, 30, 343, 350

FLpanel_end
FLrun

;initial values
FLsetVal_i    12000,gih1    ;init Cutoff value
FLsetVal_i    .2,gih2     ;init Q value
FLsetVal_i    1.01,gih3    ;init LFO level
FLsetVal_i    2.4,gih3b   ;init LFO rate
FLsetVal_i    1.01,gih3c    ;init Detune value
FLsetVal_i    2,     ihBendRange  ;init Pitch Bend value

;amplitude envelope:
FLsetVal_i    0.02,gih4    ;init value attack
FLsetVal_i    0.31,gih5    ;init value decay
FLsetVal_i    .85,gih6     ;init value sustain
FLsetVal_i    .5,gih7        ;init value release

;filter envelope:
FLsetVal_i    0.08,gih8    ;init value attack
FLsetVal_i    0.54,gih9    ;init value decay
FLsetVal_i    .14,gih10    ;init value sustain
FLsetVal_i    1.60,gih11    ;init value release


instr 1

if gkonoff    =    1    then
turnoff
endif

iamp    ampmidi    .5
ifreq    cpsmidi

kmax = 10
kmin = 0
imin = 0
imax = 1
ichan = 1
ictlno = 1

;kdest    ctrl7    ichan, ictlno, kmin, kmax

;k1    ctrl7    1,1,0,30
;ktrig    changed    k1
;FLsetVal    ktrig,k1,gih3

;k2    ctrl7    1,91,0,(sr)/2
;trig    changed    k2
;FLsetVal    ktrig,k2,gih1

;k3    ctrl7    1,93,0.1,0.99
;ktrig    changed    k3
;FLsetVal    ktrig,k3,gih2

;k4    ctrl7    1,74,0,4.0
;ktrig    changed    k4
;FLsetVal    ktrig,k4,gih3c

;k5    ctrl7    1,71,0,30
;ktrig    changed    k5
;FLsetVal    ktrig,k5,gih3b


kbend    pchbend    imin,imax
kbend = kbend*gkBendRange
kbend = semitone(kbend)

kporttime    linseg    0,0.01,0.01
kbend    portk    kbend,kporttime

klfo    lfo    gklfo,gkrate,0
avco1 vco2    iamp,(ifreq*kbend)+klfo,0
avco2 vco2    iamp,(ifreq*kbend*gkdet)+klfo,0
asum    sum    avco1,avco2
kadsrfilt    mxadsr        i(gkatt2),i(gkdec2),i(gksus2),i(gkrel2),0,1
afilt    moogvcf    asum,gkfreq*kadsrfilt,gkreso

kadsr mxadsr    i(gkatt),i(gkdec),i(gksus),i(gkrel),0,1
outs    afilt*kadsr,afilt*kadsr

endin

instr 2
exitnow
endin


</CsInstruments>
<CsScore>

f1    0    16384    10    1
f0    [3600*24]

</CsScore>
</CsoundSynthesizer>

 

 

brian

 

 

On Fri, 8 Feb 2019 20:34:19 +0000, john wrote:

On Fri, 8 Feb 2019, brian@AMSYNTH.COMwrote:
Hi everyone, it appears that the lfo opcode provides a sinewave that is bipolar. Is there a unipolar alternative?
Just add kamp to the output
Also, I've been using linsegr for envelopes, but it has the limitation that the sustain point must be the second-to-last step. Is there an alternative that allows the sustain point to be assignable to other points?  
If it is the sustain point what are you expecting after?  If using score 
then using linseg (or expseg etc) and arithmeric involving p3 usually 
works.  If midi then I am out of my experience.

Maybe I just do not understand what you want.

==John ff

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Date2019-02-15 13:15
FromJohn ff
SubjectRe: [Csnd] Question about lfo and linsegr
What I meant was to replace

klfo    lfo    gklfo,gkrate,0

by


klfo    lfo    gklfo,gkrate
klfo    +=     gklfo


in your example

⁣Sent from TypeApp ​

On Feb 15, 2019, 12:59, at 12:59, brian@amsynth.com wrote:
>  
>
>I'm not sure what you mean by adding kamp to the output. All I have
>been able to do so far is to add the LFO to the amplitude, but that
>just
>adds a tremolo effect, which I don't want yet. Can you show me where to
>make the changes? 
>
>Here is the instrument I'm using: 
>
>-odac
>-+rtaudio=jack -+rtmidi=alsa -Ma
>-dm0
>
>sr=48000
>ksmps=64
>nchnls=2
>0dbfs=1
>
>;panel
>FLcolor 233, 185, 110,
>0, 0, 0
>FLpanel "ZSynth-MoogVCF-ModWheel
>LFO",1010,550,300,100,4,-1,1
>FLvkeybd
>"keyboard.map",960,90,20,430
>gkonoff,ihb2 FLbutton
>"On/Off",0,1,2,100,30,20,20,0,1,0,0
>gk3,ihb4 FLbutton
>"Exit",1,0,21,100,30,20,70,0,2,0,0
>
>;displays for Cut-Q-LFO
>Flsliders
>ihval1 FLvalue "",60,30,520,20
>ihval2 FLvalue
>"",60,30,520,70
>ihval3 FLvalue "",60,30,520,120
>ihval3b FLvalue
>"",60,30,520,155
>
>;display for Detune Flknob
>ihval3c FLvalue
>"",60,30,110,135
>
>;displays for Amp Env Flsliders
>ihval4 FLvalue
>"",60,30,260,120+80
>ihval5 FLvalue "",60,30,260,120+130
>ihval6 FLvalue
>"",60,30,260,120+180
>ihval7 FLvalue "",60,30,260,120+230
>
>;displays for
>Fil Env Flsliders
>ihval8 FLvalue "",60,30,520,120+80
>ihval9 FLvalue
>"",60,30,520,120+130
>ihval10 FLvalue "",60,30,520,120+180
>ihval11
>FLvalue "",60,30,520,120+230
>
>;kout,ihandle Flslider "", imin, imax,
>iexp, itype, idisp, iwidth, iheight, ix, iy
>
>gkfreq,gih1 FLslider
>"Cutoff", 1, (sr)/2, 0, 25, ihval1, 355, 25, 143, 20
>gkreso,gih2
>FLslider "Resonance", 0.1, 0.99, 0, 25, ihval2, 355, 25, 143,
>70
>gklfo,gih3 FLslider "LFO-level", 0, 30, 0, 25, ihval3, 155, 25, 343,
>120
>gkrate,gih3b FLslider "LFO-rate", 0, 30, 0, 25, ihval3b, 155, 25,
>343, 160
>gkdet,gih3c FLknob "Detune", 0, 4.0, 0, 1, ihval3c, 60, 40,
>120
>;FLTK-COUNTERS MIN | MAX | STEP1 | STEP2 | TYPE | WIDTH | HEIGHT | X
>| Y | OPCODE
>gkBendRange, ihBendRange FLcount "Bend Range", -48, 48, 1,
>1, 2, 100, 25, 210, 120, -1
>
>;adsr volume
>gkatt,gih4 FLslider "A.
>attack",0.01, 2, 0, 25, ihval4, 155, 30, 90, 200
>gkdec,gih5 FLslider "A.
>decay",0, 2, 0, 25, ihval5, 155, 30, 90, 250
>gksus,gih6 FLslider "A.
>sustain",0.001, 1, 0, 25, ihval6, 155, 30, 90, 300
>gkrel,gih7 FLslider
>"A. release",0, 4, 0, 25, ihval7, 155, 30, 90, 350
>
>;adsr moog
>filter
>gkatt2,gih8 FLslider "F. attack",0.01, 2, 0, 25, ihval8, 155, 30,
>343, 200
>gkdec2,gih9 FLslider "F. decay",0, 2, 0, 25, ihval9, 155, 30,
>343, 250
>gksus2,gih10 FLslider "F. sustain",0.001, 1, 0, 25, ihval10,
>155, 30, 343, 300
>gkrel2,gih11 FLslider "F. release",0, 4, 0, 25,
>ihval11, 155, 30, 343, 350
>
>FLpanel_end
>FLrun
>
>;initial
>values
>FLsetVal_i 12000,gih1 ;init Cutoff value
>FLsetVal_i .2,gih2 ;init
>Q value
>FLsetVal_i 1.01,gih3 ;init LFO level
>FLsetVal_i 2.4,gih3b ;init
>LFO rate
>FLsetVal_i 1.01,gih3c ;init Detune value
>FLsetVal_i 2,
>ihBendRange ;init Pitch Bend value
>
>;amplitude envelope:
>FLsetVal_i
>0.02,gih4 ;init value attack
>FLsetVal_i 0.31,gih5 ;init value
>decay
>FLsetVal_i .85,gih6 ;init value sustain
>FLsetVal_i .5,gih7 ;init
>value release
>
>;filter envelope:
>FLsetVal_i 0.08,gih8 ;init value
>attack
>FLsetVal_i 0.54,gih9 ;init value decay
>FLsetVal_i .14,gih10 ;init
>value sustain
>FLsetVal_i 1.60,gih11 ;init value release
>
>instr 1
>
>if
>gkonoff = 1 then
>turnoff
>endif
>
>iamp ampmidi .5
>ifreq cpsmidi
>
>kmax =
>10
>kmin = 0
>imin = 0
>imax = 1
>ichan = 1
>ictlno = 1
>
>;kdest ctrl7 ichan,
>ictlno, kmin, kmax
>
>;k1 ctrl7 1,1,0,30
>;ktrig changed k1
>;FLsetVal
>ktrig,k1,gih3
>
>;k2 ctrl7 1,91,0,(sr)/2
>;trig changed k2
>;FLsetVal
>ktrig,k2,gih1
>
>;k3 ctrl7 1,93,0.1,0.99
>;ktrig changed k3
>;FLsetVal
>ktrig,k3,gih2
>
>;k4 ctrl7 1,74,0,4.0
>;ktrig changed k4
>;FLsetVal
>ktrig,k4,gih3c
>
>;k5 ctrl7 1,71,0,30
>;ktrig changed k5
>;FLsetVal
>ktrig,k5,gih3b
>
>kbend pchbend imin,imax
>kbend = kbend*gkBendRange
>kbend
>= semitone(kbend)
>
>kporttime linseg 0,0.01,0.01
>kbend portk
>kbend,kporttime
>
>klfo lfo gklfo,gkrate,0
>avco1 vco2
>iamp,(ifreq*kbend)+klfo,0
>avco2 vco2
>iamp,(ifreq*kbend*gkdet)+klfo,0
>asum sum avco1,avco2
>kadsrfilt mxadsr
>i(gkatt2),i(gkdec2),i(gksus2),i(gkrel2),0,1
>afilt moogvcf
>asum,gkfreq*kadsrfilt,gkreso
>
>kadsr mxadsr
>i(gkatt),i(gkdec),i(gksus),i(gkrel),0,1
>outs
>afilt*kadsr,afilt*kadsr
>
>endin
>
>instr 2
>exitnow
>endin
>
>f1 0 16384 10
>1
>f0 [3600*24]
>
>brian 
>
>On Fri, 8 Feb 2019 20:34:19 +0000, john wrote:
>
>
>> On Fri, 8 Feb 2019, brian@AMSYNTH.COM [1]wrote:
>> 
>>> Hi everyone,
>it appears that the lfo opcode provides a sinewave that is bipolar. Is
>there a unipolar alternative?
>> 
>> Just add kamp to the output
>> 
>>>
>Also, I've been using linsegr for envelopes, but it has the limitation
>that the sustain point must be the second-to-last step. Is there an
>alternative that allows the sustain point to be assignable to other
>points?
>> 
>> If it is the sustain point what are you expecting after? If
>using score 
>> then using linseg (or expseg etc) and arithmeric
>involving p3 usually 
>> works. If midi then I am out of my experience.
>>
>
>> Maybe I just do not understand what you want.
>> 
>> ==John ff
>> 
>>
>Csound mailing list
>> Csound@listserv.heanet.ie [2]
>>
>https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [3]
>> Send bugs reports
>to
>> https://github.com/csound/csound/issues [4]
>> Discussions of bugs
>and features can be posted here
>
>  
>
>Links:
>------
>[1]
>mailto:brian@AMSYNTH.COM
>[2] mailto:Csound@listserv.heanet.ie
>[3]
>https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
>[4]
>https://github.com/csound/csound/issues
>
>Csound mailing list
>Csound@listserv.heanet.ie
>https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
>Send bugs reports to
>        https://github.com/csound/csound/issues
>Discussions of bugs and features can be posted here

Csound mailing list
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Date2019-02-15 13:29
Frombrian@AMSYNTH.COM
SubjectRe: [Csnd] Question about lfo and linsegr

Thanks John, that seemed to do the trick. (It might be an idea to mention this in the manual.. unless it's already mentioned somewhere else...)

 

brian

 

On Fri, 15 Feb 2019 13:15:59 +0000, John ff wrote:

What I meant was to replace

klfo    lfo    gklfo,gkrate,0

by


klfo    lfo    gklfo,gkrate
klfo    +=     gklfo


in your example

⁣Sent from TypeApp ​

On Feb 15, 2019, 12:59, at 12:59, brian@amsynth.comwrote:
I'm not sure what you mean by adding kamp to the output. All I have been able to do so far is to add the LFO to the amplitude, but that just adds a tremolo effect, which I don't want yet. Can you show me where to make the changes? Here is the instrument I'm using: -odac -+rtaudio=jack -+rtmidi=alsa -Ma -dm0 sr=48000 ksmps=64 nchnls=2 0dbfs=1 ;panel FLcolor 233, 185, 110, 0, 0, 0 FLpanel "ZSynth-MoogVCF-ModWheel LFO",1010,550,300,100,4,-1,1 FLvkeybd "keyboard.map",960,90,20,430 gkonoff,ihb2 FLbutton "On/Off",0,1,2,100,30,20,20,0,1,0,0 gk3,ihb4 FLbutton "Exit",1,0,21,100,30,20,70,0,2,0,0 ;displays for Cut-Q-LFO Flsliders ihval1 FLvalue "",60,30,520,20 ihval2 FLvalue "",60,30,520,70 ihval3 FLvalue "",60,30,520,120 ihval3b FLvalue "",60,30,520,155 ;display for Detune Flknob ihval3c FLvalue "",60,30,110,135 ;displays for Amp Env Flsliders ihval4 FLvalue "",60,30,260,120+80 ihval5 FLvalue "",60,30,260,120+130 ihval6 FLvalue "",60,30,260,120+180 ihval7 FLvalue "",60,30,260,120+230 ;displays for Fil Env Flsliders ihval8 FLvalue "",60,30,520,120+80 ihval9 FLvalue "",60,30,520,120+130 ihval10 FLvalue "",60,30,520,120+180 ihval11 FLvalue "",60,30,520,120+230 ;kout,ihandle Flslider "", imin, imax, iexp, itype, idisp, iwidth, iheight, ix, iy gkfreq,gih1 FLslider "Cutoff", 1, (sr)/2, 0, 25, ihval1, 355, 25, 143, 20 gkreso,gih2 FLslider "Resonance", 0.1, 0.99, 0, 25, ihval2, 355, 25, 143, 70 gklfo,gih3 FLslider "LFO-level", 0, 30, 0, 25, ihval3, 155, 25, 343, 120 gkrate,gih3b FLslider "LFO-rate", 0, 30, 0, 25, ihval3b, 155, 25, 343, 160 gkdet,gih3c FLknob "Detune", 0, 4.0, 0, 1, ihval3c, 60, 40, 120 ;FLTK-COUNTERS MIN | MAX | STEP1 | STEP2 | TYPE | WIDTH | HEIGHT | X | Y | OPCODE gkBendRange, ihBendRange FLcount "Bend Range", -48, 48, 1, 1, 2, 100, 25, 210, 120, -1 ;adsr volume gkatt,gih4 FLslider "A. attack",0.01, 2, 0, 25, ihval4, 155, 30, 90, 200 gkdec,gih5 FLslider "A. decay",0, 2, 0, 25, ihval5, 155, 30, 90, 250 gksus,gih6 FLslider "A. sustain",0.001, 1, 0, 25, ihval6, 155, 30, 90, 300 gkrel,gih7 FLslider "A. release",0, 4, 0, 25, ihval7, 155, 30, 90, 350 ;adsr moog filter gkatt2,gih8 FLslider "F. attack",0.01, 2, 0, 25, ihval8, 155, 30, 343, 200 gkdec2,gih9 FLslider "F. decay",0, 2, 0, 25, ihval9, 155, 30, 343, 250 gksus2,gih10 FLslider "F. sustain",0.001, 1, 0, 25, ihval10, 155, 30, 343, 300 gkrel2,gih11 FLslider "F. release",0, 4, 0, 25, ihval11, 155, 30, 343, 350 FLpanel_end FLrun ;initial values FLsetVal_i 12000,gih1 ;init Cutoff value FLsetVal_i .2,gih2 ;init Q value FLsetVal_i 1.01,gih3 ;init LFO level FLsetVal_i 2.4,gih3b ;init LFO rate FLsetVal_i 1.01,gih3c ;init Detune value FLsetVal_i 2, ihBendRange ;init Pitch Bend value ;amplitude envelope: FLsetVal_i 0.02,gih4 ;init value attack FLsetVal_i 0.31,gih5 ;init value decay FLsetVal_i .85,gih6 ;init value sustain FLsetVal_i .5,gih7 ;init value release ;filter envelope: FLsetVal_i 0.08,gih8 ;init value attack FLsetVal_i 0.54,gih9 ;init value decay FLsetVal_i .14,gih10 ;init value sustain FLsetVal_i 1.60,gih11 ;init value release instr 1 if gkonoff = 1 then turnoff endif iamp ampmidi .5 ifreq cpsmidi kmax = 10 kmin = 0 imin = 0 imax = 1 ichan = 1 ictlno = 1 ;kdest ctrl7 ichan, ictlno, kmin, kmax ;k1 ctrl7 1,1,0,30 ;ktrig changed k1 ;FLsetVal ktrig,k1,gih3 ;k2 ctrl7 1,91,0,(sr)/2 ;trig changed k2 ;FLsetVal ktrig,k2,gih1 ;k3 ctrl7 1,93,0.1,0.99 ;ktrig changed k3 ;FLsetVal ktrig,k3,gih2 ;k4 ctrl7 1,74,0,4.0 ;ktrig changed k4 ;FLsetVal ktrig,k4,gih3c ;k5 ctrl7 1,71,0,30 ;ktrig changed k5 ;FLsetVal ktrig,k5,gih3b kbend pchbend imin,imax kbend = kbend*gkBendRange kbend = semitone(kbend) kporttime linseg 0,0.01,0.01 kbend portk kbend,kporttime klfo lfo gklfo,gkrate,0 avco1 vco2 iamp,(ifreq*kbend)+klfo,0 avco2 vco2 iamp,(ifreq*kbend*gkdet)+klfo,0 asum sum avco1,avco2 kadsrfilt mxadsr i(gkatt2),i(gkdec2),i(gksus2),i(gkrel2),0,1 afilt moogvcf asum,gkfreq*kadsrfilt,gkreso kadsr mxadsr i(gkatt),i(gkdec),i(gksus),i(gkrel),0,1 outs afilt*kadsr,afilt*kadsr endin instr 2 exitnow endin f1 0 16384 10 1 f0 [3600*24] brian On Fri, 8 Feb 2019 20:34:19 +0000, john wrote:
On Fri, 8 Feb 2019, brian@AMSYNTH.COM[1]wrote:
Hi everyone,
it appears that the lfo opcode provides a sinewave that is bipolar. Is there a unipolar alternative?
Just add kamp to the output
Also, I've been using linsegr for envelopes, but it has the limitation that the sustain point must be the second-to-last step. Is there an alternative that allows the sustain point to be assignable to other points?
If it is the sustain point what are you expecting after? If
using score
then using linseg (or expseg etc) and arithmeric
involving p3 usually
works. If midi then I am out of my experience.
Maybe I just do not understand what you want. ==John ff
Csound mailing list
Csound@listserv.heanet.ie [2]
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND[3]
Send bugs reports
to
https://github.com/csound/csound/issues [4] Discussions of bugs
and features can be posted here Links: ------ [1] mailto:brian@AMSYNTH.COM [2] mailto:Csound@listserv.heanet.ie [3] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [4] https://github.com/csound/csound/issues Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here
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Date2019-02-15 13:31
Frombrian@AMSYNTH.COM
SubjectRe: [Csnd] Question about lfo and linsegr

Hi Guillermo,

thanks for this! It works fine here.. I have to study the math a bit, but it seems to make sense. -I'm playing around with the envelope parameters and getting nice results! :)

brian

 

On Sat, 9 Feb 2019 13:48:46 -0300, Guillermo Senna wrote:

Yes, that's because every time you change the 'kEnvRel linseg ...' line
you have to sum the durations of the segments in that line and pass that
value to xtratim. Here's instr1, now with two more variable!

instr 1

  inum  notnum
  icps  cpsmidi
  iamp  ampmidi 0.5

  itim1 = 0.01
  iamp1 = 0.9
 
  xtratim 2.71 ; the sum of durations in the release linseg.
 
  kEnvRel init 0
 
  if (release:k() != 1) then

    kEnv    linseg  0, 0.01, 0.9, 0.5, 0.5

  else
    kEnvRel linseg 0, itim1, 0,  0, iamp1, 0.5,   0.5,  0.7,   0.1,
0.6,   0.9,  0.9,     0

    kStep init 0

    if kStep == 0 then
      kLastEnv = kEnv
      kEnv = 0

  endif   

    if kStepbrian@AMSYNTH.COMwrote:
Hi Guillermo, I tried your file just now (with line 37 adjusted as you said), and it seems to be on the right track. If you try the code here below (I adjusted the audio options for use on my pc) you wil see that the final relase stage of "0.9, 0" is quite fast, when it is supposed to be slow. Also, you will hear that when a note sustain is released, the amplitude rises slightly before decreasing, which it shouldn't. ; Select audio/midi flags here according to platform ; Audio out Audio in Silent MIDI in -odac -+rtaudio=jack -+rtmidi=alsa -Ma ;;;realtime I/O ;Simple usage of the xtratim opcode sr = 48000 ksmps = 10 nchnls = 2 0dbfs=1 instr 1 inum notnum icps cpsmidi iamp ampmidi 0.5 xtratim 1.55 kEnvRel init 0 if (release:k() != 1) then kEnv linseg 0, 0.01,0.9, 0.5, 0.5 else kEnvRel linseg 0, 0.01, 0, 0, 0.9, 0.5,0.5, 0.7,0.1, 0.6,0.9, 0.9,0 kStep init 0 if kStep == 0 then kLastEnv = kEnv kEnv = 0 endif if kStep I apologize. Line 37 should be:
kEnvRel = kLastEnv +
(0.9-kLastEnv)/(kr*0.01) * kStep
On 8/2/19 19:57, Guillermo Senna
wrote:
I've adapted the xtratim example found on the manual. There
are probably a lot of easier ways to do it! I didn't optimize for the number of variables used; I created them as I needed them. On 8/2/19 18:25, brian@AMSYNTH.COM[23]wrote:
It's currently nothing
special.. something like this: kenva1 linsegr 0, 0.01,0.9, 0.5,0.5, 0.14,0 I'd like to extend it like this, with the sustain point at the asterisk: kenva1 linsegr 0, 0.01,0.9, 0.5,0.5,* 0.01,0.9, 0.5,0.5, 0.3,0.8, 0.6,0.3, 0.14,0 Just to give a rough idea of the concept.. brian On Fri, 8 Feb 2019 18:16:00 -0300, Guillermo Senna wrote:
Could you post the envelope you are working
with?
On 8/2/19 18:10, brian@AMSYNTH.COM[1][10]wrote:
Hi
Guillermo, thanks for the suggestion; I tested out the xtratim examples in the Csound manual, but unfortunately they seem to just give a longish release, and nothing more. brian On Fri, 8 Feb 2019 17:42:28 -0300, Guillermo Senna wrote:
A combination of linseg and
xtratim? linseg is supposed to keep the last
f 2px solid;
margin-left:5px; width:100%"> value. On 8/2/19> brian@AMSYNTH.COM[1][1]wrote:
="padding-left:5px;
border-left:#1010ff 2px solid; margin-left:5px; width:100%"> Hi everyone, it appears that the lfo opcode provides a sinewave
that is bipolar. Is there a unipolar alternative?
er-left:#1010ff 2px solid; margin-left:5px; width:100%"> ="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px; width:100%">left:5px; width:100%"> Also, I've been using linsegr for envelopes, but it has the limitation that the sustain point must be the second-to-last step. Is there an al
ding-left:5px;
border-left:#1010ff 2px solid;
margin-left:5px; width:100%">
border-left:#1010ff 2px solid; margin-left:5px; width:100%"> If it is the sustain
"padding-left:5px; border-left:#1010ff 2px solid;
margin-left:5px; width:100%">
f 2px solid; margin-left:5px;
width:100%"> expecting after? If using score then using linse etc) and arithmeric involving p3 usually works. If midi then I am out of my experience. Maybe I just do not understand what you want. ==John ff Csound mailing list https://listserv.heanet.ie/cgi-bin/wa?A0="padding-left:5px; border-left:#1010ff 2px solid; margin-left:5px; width:100%">nd/csound/issues[4] Discussions of bugs and features can be po
idth:100%">
h:100%">Csound
mailing list
Csound@listserv.heanet.ie [2] [3] [5] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [3] [4][6] Send bugs reports to ub.com/csound/csound/issues">https://github.com/csound/csound/issues [5] [7] Discussions of bugs and features can be posted here Links: ------ [1] mailto:brian@AMSYNTH.COM [7] [6] [2] mailto:Csound@listserv in/wa?A0=CSOUND "https://github.com/csound/csound/issues to:Csound@listserv.heanet.ie [4] [7] [6] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [5] [8] [7] https://github.com/csound/csound/issues[6][9] Csound ma
gi-bin/
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [8] Send bugs reports to Csound mailing list eanet.ie/cgi-bin/wa?A0=CSOUND">https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND[12]
Send bugs reports
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rder-left:#1010ff 2px solid;
margin-left:5px; width:100%">https://github.com/csound/csound/issues [9] [13] Discussions of bugs and features can be posted here Links: ------ [1] mailto:brian@AMSYNTH.COM [10] [2] mai d@listserv.heanet.ie">Csound@listserv.heanet.ie [4] https://listserv.heanet.ie/cg
SOUND [5]
https://github.com/csound/csound/issues [11] [6] mailto:brian@AMSYNTH.COM [12] [7] mailto:Csound@listserv.heanet.ie [13] [8] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [14] [9] https://github.com/csound/csound/issues [15] [10] mailto:brian@AMSYNTH.COM [16] [11] mailto:Csound@listserv.heanet.ie [17] [12] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [18] [13] https://github.com/csound/csound/issues [19] Csound mailing list Csound@listserv.heanet.ie [20] https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND [21] Send bugs reports to https://github.com/csound/csound/issues[22] Discussions of bugs and features can be posted here
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