Dear community,
I have question concerning the expesgr.
I understood, that it makes exponential curves that I can maybee use
for envelopes or something like that.
But I don't understand what the numbers exactly do in this example:
 ; Use an amplitude envelope with second-long release.
  kenv expsegr 0.01, p3/2, 1, p3/2, 0.01, 1, 1
Is 0.001  the attack-time?
what are the other numbers for, especially the last two number ones.
I tried to understand, but it is too complicated for me, alt least at
the moment.
I would like to use the expsgr for partials, rising and falling at
different times.

You only need to use expsegr if you want an extra release segment to
continue after the instrument has stopped. Generally the 'r' family of
opcodes are used for midi driven instrument. The first values is the
starting point of the envelope. The next one is a time value.
Specifically the time it will take to get to 1 in your case. Then you
have another time value, i.e., the length of time it will take to get
to 0.01. The last two number specify the duration of the release and
the value it will eventually get to at the end of the release. If
you're not using a midi keyboard or something like that to trigger
your instrument I suggest using plain old expseg instead which doesn't
need those last two values.

Rory.





2009/3/31 Stefan Thomas :
> Dear community,
> I have question concerning the expesgr.
> I understood, that it makes exponential curves that I can maybee use
> for envelopes or something like that.
> But I don't understand what the numbers exactly do in this example:
>  ; Use an amplitude envelope with second-long release.
>  kenv expsegr 0.01, p3/2, 1, p3/2, 0.01, 1, 1
> Is 0.001  the attack-time?
> what are the other numbers for, especially the last two number ones.
> I tried to understand, but it is too complicated for me, alt least at
> the moment.
> I would like to use the expsgr for partials, rising and falling at
> different times.
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>

Dear Rory,
thanks for Your help, I think I understand it better now.
I now tried to make a simple instrument, that I could play live with
midi, with an  expsegr envelope, but unfortunately I can't hear
anything, also I can see the midi messages on the terminal window. I
don't know, what could be wrong with this snippet:


-odevaudio -M1 -b400
;-odac           -iadc     -d     ;;;RT audio I/O



sr = 44100
kr = 4410
ksmps = 10
nchnls = 1
massign    0, 1              ; assign all midi events to instr 1,
pgmassign  0, 1              ; also all program changes
 instr     1
icps    cpsmidi
  iamp    ampmidi    	1000


    kenv expsegr 0.01, p3/2, 1, p3/2, 0.01, 1, 1

 kamp = kenv * 30000
a1    oscil     kamp, icps, 1
      out       a1
      endin



; Table #1, a sine wave.
f 1 0 16384 10 1
i 1    0      3600






2009/3/31 Rory Walsh :
> You only need to use expsegr if you want an extra release segment to
> continue after the instrument has stopped. Generally the 'r' family of
> opcodes are used for midi driven instrument. The first values is the
> starting point of the envelope. The next one is a time value.
> Specifically the time it will take to get to 1 in your case. Then you
> have another time value, i.e., the length of time it will take to get
> to 0.01. The last two number specify the duration of the release and
> the value it will eventually get to at the end of the release. If
> you're not using a midi keyboard or something like that to trigger
> your instrument I suggest using plain old expseg instead which doesn't
> need those last two values.
>
> Rory.
>
>
>
>
>
> 2009/3/31 Stefan Thomas :
>> Dear community,
>> I have question concerning the expesgr.
>> I understood, that it makes exponential curves that I can maybee use
>> for envelopes or something like that.
>> But I don't understand what the numbers exactly do in this example:
>>  ; Use an amplitude envelope with second-long release.
>>  kenv expsegr 0.01, p3/2, 1, p3/2, 0.01, 1, 1
>> Is 0.001  the attack-time?
>> what are the other numbers for, especially the last two number ones.
>> I tried to understand, but it is too complicated for me, alt least at
>> the moment.
>> I would like to use the expsgr for partials, rising and falling at
>> different times.
>>
>>
>> Send bugs reports to this list.
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>>
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"

Don't use p3 with MIDI. That's where you are going wrong.

use something like this

    kenv expsegr 0.01,0.1, 1, 2,1, 0.1,0.01

Victor

----- Original Message ----- 
From: "Stefan Thomas" 
To: 
Sent: Tuesday, March 31, 2009 10:16 PM
Subject: [Csnd] Re: Re: don't understand expsegr


Dear Rory,
thanks for Your help, I think I understand it better now.
I now tried to make a simple instrument, that I could play live with
midi, with an  expsegr envelope, but unfortunately I can't hear
anything, also I can see the midi messages on the terminal window. I
don't know, what could be wrong with this snippet:


-odevaudio -M1 -b400
;-odac           -iadc     -d     ;;;RT audio I/O



sr = 44100
kr = 4410
ksmps = 10
nchnls = 1
massign    0, 1              ; assign all midi events to instr 1,
pgmassign  0, 1              ; also all program changes
 instr     1
icps    cpsmidi
  iamp    ampmidi    1000


    kenv expsegr 0.01, p3/2, 1, p3/2, 0.01, 1, 1

 kamp = kenv * 30000
a1    oscil     kamp, icps, 1
      out       a1
      endin



; Table #1, a sine wave.
f 1 0 16384 10 1
i 1    0      3600






2009/3/31 Rory Walsh :
> You only need to use expsegr if you want an extra release segment to
> continue after the instrument has stopped. Generally the 'r' family of
> opcodes are used for midi driven instrument. The first values is the
> starting point of the envelope. The next one is a time value.
> Specifically the time it will take to get to 1 in your case. Then you
> have another time value, i.e., the length of time it will take to get
> to 0.01. The last two number specify the duration of the release and
> the value it will eventually get to at the end of the release. If
> you're not using a midi keyboard or something like that to trigger
> your instrument I suggest using plain old expseg instead which doesn't
> need those last two values.
>
> Rory.
>
>
>
>
>
> 2009/3/31 Stefan Thomas :
>> Dear community,
>> I have question concerning the expesgr.
>> I understood, that it makes exponential curves that I can maybee use
>> for envelopes or something like that.
>> But I don't understand what the numbers exactly do in this example:
>> ; Use an amplitude envelope with second-long release.
>> kenv expsegr 0.01, p3/2, 1, p3/2, 0.01, 1, 1
>> Is 0.001 the attack-time?
>> what are the other numbers for, especially the last two number ones.
>> I tried to understand, but it is too complicated for me, alt least at
>> the moment.
>> I would like to use the expsgr for partials, rising and falling at
>> different times.
>>
>>
>> Send bugs reports to this list.
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
>> csound"
>>
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
> csound"


Send bugs reports to this list.
To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
csound"= 

Dear Vivtor,
thanks for Your answer. I think I understood it now. It helped me,
that I used varibles. Maybee this can help other greenhorns too:

instr     1
icps    cpsmidi
  iamp    ampmidi    	10000

itransient= 0.1
idecay = 1

;kenv expsegr 0.1, itransient, 1,  0.1, 0.1 ; sounds like a  flute
kenv expsegr 0.1, itransient*0.01, 1, ideacy*20, 0.001,  0.1, 0.1 ;
sounds like a piano
; wie laut ist es, wenn die Note beendet wird
;kenv expsegr 0.1, itrans*10, 1, idecay* 0.001,  0.1, 0.1 ;  opposite of a piano
a1    oscil   kenv*iamp, icps, 1
      out       a1
      endin

2009/3/31 victor :
> Don't use p3 with MIDI. That's where you are going wrong.
>
> use something like this
>
>   kenv expsegr 0.01,0.1, 1, 2,1, 0.1,0.01
>
> Victor
>
> ----- Original Message ----- From: "Stefan Thomas"
> 
> To: 
> Sent: Tuesday, March 31, 2009 10:16 PM
> Subject: [Csnd] Re: Re: don't understand expsegr
>
>
> Dear Rory,
> thanks for Your help, I think I understand it better now.
> I now tried to make a simple instrument, that I could play live with
> midi, with an  expsegr envelope, but unfortunately I can't hear
> anything, also I can see the midi messages on the terminal window. I
> don't know, what could be wrong with this snippet:
> 
> 
> -odevaudio -M1 -b400
> ;-odac           -iadc     -d     ;;;RT audio I/O
> 
>
> 
> sr = 44100
> kr = 4410
> ksmps = 10
> nchnls = 1
> massign    0, 1              ; assign all midi events to instr 1,
> pgmassign  0, 1              ; also all program changes
> instr     1
> icps    cpsmidi
>  iamp    ampmidi    1000
>
>
>   kenv expsegr 0.01, p3/2, 1, p3/2, 0.01, 1, 1
>
> kamp = kenv * 30000
> a1    oscil     kamp, icps, 1
>     out       a1
>     endin
>
> 
> 
> ; Table #1, a sine wave.
> f 1 0 16384 10 1
> i 1    0      3600
>
>
>
> 
> 
>
> 2009/3/31 Rory Walsh :
>>
>> You only need to use expsegr if you want an extra release segment to
>> continue after the instrument has stopped. Generally the 'r' family of
>> opcodes are used for midi driven instrument. The first values is the
>> starting point of the envelope. The next one is a time value.
>> Specifically the time it will take to get to 1 in your case. Then you
>> have another time value, i.e., the length of time it will take to get
>> to 0.01. The last two number specify the duration of the release and
>> the value it will eventually get to at the end of the release. If
>> you're not using a midi keyboard or something like that to trigger
>> your instrument I suggest using plain old expseg instead which doesn't
>> need those last two values.
>>
>> Rory.
>>
>>
>>
>>
>>
>> 2009/3/31 Stefan Thomas :
>>>
>>> Dear community,
>>> I have question concerning the expesgr.
>>> I understood, that it makes exponential curves that I can maybee use
>>> for envelopes or something like that.
>>> But I don't understand what the numbers exactly do in this example:
>>> ; Use an amplitude envelope with second-long release.
>>> kenv expsegr 0.01, p3/2, 1, p3/2, 0.01, 1, 1
>>> Is 0.001 the attack-time?
>>> what are the other numbers for, especially the last two number ones.
>>> I tried to understand, but it is too complicated for me, alt least at
>>> the moment.
>>> I would like to use the expsgr for partials, rising and falling at
>>> different times.
>>>
>>>
>>> Send bugs reports to this list.
>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>>> csound"
>>>
>>
>>
>> Send bugs reports to this list.
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> csound"
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"=
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"
>

Better still, use Michael Goggins midi flags. They let you send midi
messages to p-fields so you don't even have to use midi opcodes. They
basically make most Csound instruments midi-able(??)...  Here's an
example, pay attention to the CsOptions. I haven't checked this as my
keyboard is tucked under a whole load of assignments that I'm afraid
to go near..



-odevaudio1 -b10 --midi-key-cps=4 --midi-velocity-amp=p5 -M1 -m0d


sr = 44100
kr = 4410
ksmps = 10
nchnls = 2

instr 1
kamp expsegr p5, 7, 0.001, 1, 0.0001
a1 oscil kamp, p4, 1
outs a1, a1
endin

instr 3
;dummy instrument..
endin



f1 0 1024 10 1 0 .25 0 .17
i3 0 600  ;let dummy instrument run so performance doesn't end






2009/3/31 Stefan Thomas :
> Dear Vivtor,
> thanks for Your answer. I think I understood it now. It helped me,
> that I used varibles. Maybee this can help other greenhorns too:
>
> instr     1
> icps    cpsmidi
>  iamp    ampmidi       10000
>
> itransient= 0.1
> idecay = 1
>
> ;kenv expsegr 0.1, itransient, 1,  0.1, 0.1 ; sounds like a  flute
> kenv expsegr 0.1, itransient*0.01, 1, ideacy*20, 0.001,  0.1, 0.1 ;
> sounds like a piano
> ; wie laut ist es, wenn die Note beendet wird
> ;kenv expsegr 0.1, itrans*10, 1, idecay* 0.001,  0.1, 0.1 ;  opposite of a piano
> a1    oscil   kenv*iamp, icps, 1
>      out       a1
>      endin
>
> 2009/3/31 victor :
>> Don't use p3 with MIDI. That's where you are going wrong.
>>
>> use something like this
>>
>>   kenv expsegr 0.01,0.1, 1, 2,1, 0.1,0.01
>>
>> Victor
>>
>> ----- Original Message ----- From: "Stefan Thomas"
>> 
>> To: 
>> Sent: Tuesday, March 31, 2009 10:16 PM
>> Subject: [Csnd] Re: Re: don't understand expsegr
>>
>>
>> Dear Rory,
>> thanks for Your help, I think I understand it better now.
>> I now tried to make a simple instrument, that I could play live with
>> midi, with an  expsegr envelope, but unfortunately I can't hear
>> anything, also I can see the midi messages on the terminal window. I
>> don't know, what could be wrong with this snippet:
>> 
>> 
>> -odevaudio -M1 -b400
>> ;-odac           -iadc     -d     ;;;RT audio I/O
>> 
>>
>> 
>> sr = 44100
>> kr = 4410
>> ksmps = 10
>> nchnls = 1
>> massign    0, 1              ; assign all midi events to instr 1,
>> pgmassign  0, 1              ; also all program changes
>> instr     1
>> icps    cpsmidi
>>  iamp    ampmidi    1000
>>
>>
>>   kenv expsegr 0.01, p3/2, 1, p3/2, 0.01, 1, 1
>>
>> kamp = kenv * 30000
>> a1    oscil     kamp, icps, 1
>>     out       a1
>>     endin
>>
>> 
>> 
>> ; Table #1, a sine wave.
>> f 1 0 16384 10 1
>> i 1    0      3600
>>
>>
>>
>> 
>> 
>>
>> 2009/3/31 Rory Walsh :
>>>
>>> You only need to use expsegr if you want an extra release segment to
>>> continue after the instrument has stopped. Generally the 'r' family of
>>> opcodes are used for midi driven instrument. The first values is the
>>> starting point of the envelope. The next one is a time value.
>>> Specifically the time it will take to get to 1 in your case. Then you
>>> have another time value, i.e., the length of time it will take to get
>>> to 0.01. The last two number specify the duration of the release and
>>> the value it will eventually get to at the end of the release. If
>>> you're not using a midi keyboard or something like that to trigger
>>> your instrument I suggest using plain old expseg instead which doesn't
>>> need those last two values.
>>>
>>> Rory.
>>>
>>>
>>>
>>>
>>>
>>> 2009/3/31 Stefan Thomas :
>>>>
>>>> Dear community,
>>>> I have question concerning the expesgr.
>>>> I understood, that it makes exponential curves that I can maybee use
>>>> for envelopes or something like that.
>>>> But I don't understand what the numbers exactly do in this example:
>>>> ; Use an amplitude envelope with second-long release.
>>>> kenv expsegr 0.01, p3/2, 1, p3/2, 0.01, 1, 1
>>>> Is 0.001 the attack-time?
>>>> what are the other numbers for, especially the last two number ones.
>>>> I tried to understand, but it is too complicated for me, alt least at
>>>> the moment.
>>>> I would like to use the expsgr for partials, rising and falling at
>>>> different times.
>>>>
>>>>
>>>> Send bugs reports to this list.
>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>>>> csound"
>>>>
>>>
>>>
>>> Send bugs reports to this list.
>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>>> csound"
>>
>>
>> Send bugs reports to this list.
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> csound"=
>>
>>
>> Send bugs reports to this list.
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> csound"
>>
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"