Is there no way to dynamically change the parameters of the tempo
statement inside the .orc  I've tried event and scoreline (which won't
allow it).  I'm trying to create a way to midi mix my music using two
instances of csound.  I have a controller that can crossfade and
dj/mix... but I can't find a way to pitch-shift/switch the tempo of a
whole song at any time.          


      Get news delivered with the All new Yahoo! Mail.  Enjoy RSS feeds right on your Mail page. Start today at http://mrd.mail.yahoo.com/try_beta?.intl=ca

You can use the -t flag to run Csound in beat mode.  From there, I'm not
certain of what you would need to make your setup work.  You might try
creating an instr that uses the tempo opcode to make realtime tempo changes,
and call it as you need it.  Here's an example:


instr 1
	tempo p4, 60
endin



I've had issues with beat mode, as I suspect there are a few unresolved
issues with its implementation.  I created a .csd that demonstrates some of
the potential bugs I've found with beat mode:

http://www.thumbuki.com/csound/files/mailinglist/flag_t_test.csd


Hope this helps.

Best,
Jake

---- 
The Csound Blog 
http://www.thumbuki.com/csound/blog 





Uduak wrote:
> 
> Is there no way to dynamically change the parameters of the tempo
> statement inside the .orc  I've tried event and scoreline (which won't
> allow it).  I'm trying to create a way to midi mix my music using two
> instances of csound.  I have a controller that can crossfade and
> dj/mix... but I can't find a way to pitch-shift/switch the tempo of a
> whole song at any time.          
> 
> 
>       Get news delivered with the All new Yahoo! Mail.  Enjoy RSS feeds
> right on your Mail page. Start today at
> http://mrd.mail.yahoo.com/try_beta?.intl=ca
> -- 
> Send bugs reports to this list.
> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
> 
> 

-- 
View this message in context: http://www.nabble.com/t-score-statement-in-.orc-tf4322804.html#a12312624
Sent from the Csound - General mailing list archive at Nabble.com.

Thanks for the info.  I did try the beat mode and it's exactly what I
needed... If it worked.  I thought that because I was using the
scoreline function that somehow that was what caused the changes to not
work, but it doesn't seem to matter (I've tried all sorts of
combinations).  I don't understand.  tempoval displays the changed
tempo, and yet it doesn't work.  Not one thing I'm trying is going
through correctly, and your examples show the same thing.  And it's
just that this is so important right now it's making me angry, cause
there seems to be no other way for me to change the tempo at any time. 
Is there any way you/or anyone could somehow take a look at the code
and see if there is a quick fix.  It's just that this is so important
right now, that it's brought me to a swift stand-still.
 



--- Jacob Joaquin  wrote:

> 
> You can use the -t flag to run Csound in beat mode.  From there, I'm
> not
> certain of what you would need to make your setup work.  You might
> try
> creating an instr that uses the tempo opcode to make realtime tempo
> changes,
> and call it as you need it.  Here's an example:
> 
> 
> instr 1
> 	tempo p4, 60
> endin
> 
> 
> 
> I've had issues with beat mode, as I suspect there are a few
> unresolved
> issues with its implementation.  I created a .csd that demonstrates
> some of
> the potential bugs I've found with beat mode:
> 
> http://www.thumbuki.com/csound/files/mailinglist/flag_t_test.csd
> 
> 
> Hope this helps.
> 
> Best,
> Jake
> 
> ---- 
> The Csound Blog 
> http://www.thumbuki.com/csound/blog 
> 
> 
> 
> 
> 
> Uduak wrote:
> > 
> > Is there no way to dynamically change the parameters of the tempo
> > statement inside the .orc  I've tried event and scoreline (which
> won't
> > allow it).  I'm trying to create a way to midi mix my music using
> two
> > instances of csound.  I have a controller that can crossfade and
> > dj/mix... but I can't find a way to pitch-shift/switch the tempo of
> a
> > whole song at any time.          
> > 
> > 
> >       Get news delivered with the All new Yahoo! Mail.  Enjoy RSS
> feeds
> > right on your Mail page. Start today at
> > http://mrd.mail.yahoo.com/try_beta?.intl=ca
> > -- 
> > Send bugs reports to this list.
> > To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
> > 
> > 
> 
> -- 
> View this message in context:
>
http://www.nabble.com/t-score-statement-in-.orc-tf4322804.html#a12312624
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> -- 
> Send bugs reports to this list.
> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
> 



      Get news delivered with the All new Yahoo! Mail.  Enjoy RSS feeds right on your Mail page. Start today at http://mrd.mail.yahoo.com/try_beta?.intl=ca

The tempo functionality in Csound is not adequate .. I would venture  
to say it does not work well enough for any useful application.  I  
ran up against this problem a few weeks ago.  I ended up writing my  
own sequencer around Csound.  I guess there isn't enough demand for  
this type of thing to be fixed. While I'm at it - I will also  
continue to encourage the following improvements:

- MIDI File opcodes (such that multiple MIDI files can be dynamically  
read in and performed in various ways within one instance of Csound)
- separating control rate from sequencing resolution - so ksmps = 1  
is not necessary.  Basically, I feel the entire sequencing engine  
needs to be redesigned with realtime considerations built in.

greg

On Aug 24, 2007, at 4:22 PM, Alex Drader wrote:

> Thanks for the info.  I did try the beat mode and it's exactly what I
> needed... If it worked.  I thought that because I was using the
> scoreline function that somehow that was what caused the changes to  
> not
> work, but it doesn't seem to matter (I've tried all sorts of
> combinations).  I don't understand.  tempoval displays the changed
> tempo, and yet it doesn't work.  Not one thing I'm trying is going
> through correctly, and your examples show the same thing.  And it's
> just that this is so important right now it's making me angry, cause
> there seems to be no other way for me to change the tempo at any time.
> Is there any way you/or anyone could somehow take a look at the code
> and see if there is a quick fix.  It's just that this is so important
> right now, that it's brought me to a swift stand-still.
>
>
>
>
> --- Jacob Joaquin  wrote:
>
>>
>> You can use the -t flag to run Csound in beat mode.  From there, I'm
>> not
>> certain of what you would need to make your setup work.  You might
>> try
>> creating an instr that uses the tempo opcode to make realtime tempo
>> changes,
>> and call it as you need it.  Here's an example:
>>
>>
>> instr 1
>> 	tempo p4, 60
>> endin
>>
>>
>>
>> I've had issues with beat mode, as I suspect there are a few
>> unresolved
>> issues with its implementation.  I created a .csd that demonstrates
>> some of
>> the potential bugs I've found with beat mode:
>>
>> http://www.thumbuki.com/csound/files/mailinglist/flag_t_test.csd
>>
>>
>> Hope this helps.
>>
>> Best,
>> Jake
>>
>> ----
>> The Csound Blog
>> http://www.thumbuki.com/csound/blog
>>
>>
>>
>>
>>
>> Uduak wrote:
>>>
>>> Is there no way to dynamically change the parameters of the tempo
>>> statement inside the .orc  I've tried event and scoreline (which
>> won't
>>> allow it).  I'm trying to create a way to midi mix my music using
>> two
>>> instances of csound.  I have a controller that can crossfade and
>>> dj/mix... but I can't find a way to pitch-shift/switch the tempo of
>> a
>>> whole song at any time.
>>>
>>>
>>>       Get news delivered with the All new Yahoo! Mail.  Enjoy RSS
>> feeds
>>> right on your Mail page. Start today at
>>> http://mrd.mail.yahoo.com/try_beta?.intl=ca
>>> -- 
>>> Send bugs reports to this list.
>>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>>
>>>
>>
>> -- 
>> View this message in context:
>>
> http://www.nabble.com/t-score-statement-in-.orc- 
> tf4322804.html#a12312624
>> Sent from the Csound - General mailing list archive at Nabble.com.
>>
>> -- 
>> Send bugs reports to this list.
>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>
>
>
>
>       Get news delivered with the All new Yahoo! Mail.  Enjoy RSS  
> feeds right on your Mail page. Start today at http:// 
> mrd.mail.yahoo.com/try_beta?.intl=ca
> -- 
> Send bugs reports to this list.
> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>

woot.

also, you know if an elliptic filter has a sound very distinctive from 
chebyshev? i was trying to use this opcode in csound called clfilt that 
gives you the option for butterworth, chebyshev 1 and 2, or elliptic, 
but they haven't implemented the elliptic stuff yet.

just wondering if it's worth emailing the list to request this.

i hope you're doing more this weekend than csound, man :p

jeremy




Greg Thompson wrote:
> The tempo functionality in Csound is not adequate .. I would venture 
> to say it does not work well enough for any useful application.  I ran 
> up against this problem a few weeks ago.  I ended up writing my own 
> sequencer around Csound.  I guess there isn't enough demand for this 
> type of thing to be fixed. While I'm at it - I will also continue to 
> encourage the following improvements:
>
> - MIDI File opcodes (such that multiple MIDI files can be dynamically 
> read in and performed in various ways within one instance of Csound)
> - separating control rate from sequencing resolution - so ksmps = 1 is 
> not necessary.  Basically, I feel the entire sequencing engine needs 
> to be redesigned with realtime considerations built in.
>
> greg
>
> On Aug 24, 2007, at 4:22 PM, Alex Drader wrote:
>
>> Thanks for the info.  I did try the beat mode and it's exactly what I
>> needed... If it worked.  I thought that because I was using the
>> scoreline function that somehow that was what caused the changes to not
>> work, but it doesn't seem to matter (I've tried all sorts of
>> combinations).  I don't understand.  tempoval displays the changed
>> tempo, and yet it doesn't work.  Not one thing I'm trying is going
>> through correctly, and your examples show the same thing.  And it's
>> just that this is so important right now it's making me angry, cause
>> there seems to be no other way for me to change the tempo at any time.
>> Is there any way you/or anyone could somehow take a look at the code
>> and see if there is a quick fix.  It's just that this is so important
>> right now, that it's brought me to a swift stand-still.
>>
>>
>>
>>
>> --- Jacob Joaquin  wrote:
>>
>>>
>>> You can use the -t flag to run Csound in beat mode.  From there, I'm
>>> not
>>> certain of what you would need to make your setup work.  You might
>>> try
>>> creating an instr that uses the tempo opcode to make realtime tempo
>>> changes,
>>> and call it as you need it.  Here's an example:
>>>
>>>
>>> instr 1
>>>     tempo p4, 60
>>> endin
>>>
>>>
>>>
>>> I've had issues with beat mode, as I suspect there are a few
>>> unresolved
>>> issues with its implementation.  I created a .csd that demonstrates
>>> some of
>>> the potential bugs I've found with beat mode:
>>>
>>> http://www.thumbuki.com/csound/files/mailinglist/flag_t_test.csd
>>>
>>>
>>> Hope this helps.
>>>
>>> Best,
>>> Jake
>>>
>>> ----
>>> The Csound Blog
>>> http://www.thumbuki.com/csound/blog
>>>
>>>
>>>
>>>
>>>
>>> Uduak wrote:
>>>>
>>>> Is there no way to dynamically change the parameters of the tempo
>>>> statement inside the .orc  I've tried event and scoreline (which
>>> won't
>>>> allow it).  I'm trying to create a way to midi mix my music using
>>> two
>>>> instances of csound.  I have a controller that can crossfade and
>>>> dj/mix... but I can't find a way to pitch-shift/switch the tempo of
>>> a
>>>> whole song at any time.
>>>>
>>>>
>>>>       Get news delivered with the All new Yahoo! Mail.  Enjoy RSS
>>> feeds
>>>> right on your Mail page. Start today at
>>>> http://mrd.mail.yahoo.com/try_beta?.intl=ca
>>>> --Send bugs reports to this list.
>>>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>>>
>>>>
>>>
>>> --View this message in context:
>>>
>> http://www.nabble.com/t-score-statement-in-.orc-tf4322804.html#a12312624
>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>
>>> --Send bugs reports to this list.
>>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>>
>>
>>
>>
>>       Get news delivered with the All new Yahoo! Mail.  Enjoy RSS 
>> feeds right on your Mail page. Start today at 
>> http://mrd.mail.yahoo.com/try_beta?.intl=ca
>> --Send bugs reports to this list.
>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>
>
> --Send bugs reports to this list.
> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk

sorry all, i just sent this to the wrong email address. oh well...


Jeremy Flores wrote:
> woot.
>
> also, you know if an elliptic filter has a sound very distinctive from 
> chebyshev? i was trying to use this opcode in csound called clfilt 
> that gives you the option for butterworth, chebyshev 1 and 2, or 
> elliptic, but they haven't implemented the elliptic stuff yet.
>
> just wondering if it's worth emailing the list to request this.
>
> i hope you're doing more this weekend than csound, man :p
>
> jeremy
>
>
>
>
> Greg Thompson wrote:
>> The tempo functionality in Csound is not adequate .. I would venture 
>> to say it does not work well enough for any useful application.  I 
>> ran up against this problem a few weeks ago.  I ended up writing my 
>> own sequencer around Csound.  I guess there isn't enough demand for 
>> this type of thing to be fixed. While I'm at it - I will also 
>> continue to encourage the following improvements:
>>
>> - MIDI File opcodes (such that multiple MIDI files can be dynamically 
>> read in and performed in various ways within one instance of Csound)
>> - separating control rate from sequencing resolution - so ksmps = 1 
>> is not necessary.  Basically, I feel the entire sequencing engine 
>> needs to be redesigned with realtime considerations built in.
>>
>> greg
>>
>> On Aug 24, 2007, at 4:22 PM, Alex Drader wrote:
>>
>>> Thanks for the info.  I did try the beat mode and it's exactly what I
>>> needed... If it worked.  I thought that because I was using the
>>> scoreline function that somehow that was what caused the changes to not
>>> work, but it doesn't seem to matter (I've tried all sorts of
>>> combinations).  I don't understand.  tempoval displays the changed
>>> tempo, and yet it doesn't work.  Not one thing I'm trying is going
>>> through correctly, and your examples show the same thing.  And it's
>>> just that this is so important right now it's making me angry, cause
>>> there seems to be no other way for me to change the tempo at any time.
>>> Is there any way you/or anyone could somehow take a look at the code
>>> and see if there is a quick fix.  It's just that this is so important
>>> right now, that it's brought me to a swift stand-still.
>>>
>>>
>>>
>>>
>>> --- Jacob Joaquin  wrote:
>>>
>>>>
>>>> You can use the -t flag to run Csound in beat mode.  From there, I'm
>>>> not
>>>> certain of what you would need to make your setup work.  You might
>>>> try
>>>> creating an instr that uses the tempo opcode to make realtime tempo
>>>> changes,
>>>> and call it as you need it.  Here's an example:
>>>>
>>>>
>>>> instr 1
>>>>     tempo p4, 60
>>>> endin
>>>>
>>>>
>>>>
>>>> I've had issues with beat mode, as I suspect there are a few
>>>> unresolved
>>>> issues with its implementation.  I created a .csd that demonstrates
>>>> some of
>>>> the potential bugs I've found with beat mode:
>>>>
>>>> http://www.thumbuki.com/csound/files/mailinglist/flag_t_test.csd
>>>>
>>>>
>>>> Hope this helps.
>>>>
>>>> Best,
>>>> Jake
>>>>
>>>> ----
>>>> The Csound Blog
>>>> http://www.thumbuki.com/csound/blog
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Uduak wrote:
>>>>>
>>>>> Is there no way to dynamically change the parameters of the tempo
>>>>> statement inside the .orc  I've tried event and scoreline (which
>>>> won't
>>>>> allow it).  I'm trying to create a way to midi mix my music using
>>>> two
>>>>> instances of csound.  I have a controller that can crossfade and
>>>>> dj/mix... but I can't find a way to pitch-shift/switch the tempo of
>>>> a
>>>>> whole song at any time.
>>>>>
>>>>>
>>>>>       Get news delivered with the All new Yahoo! Mail.  Enjoy RSS
>>>> feeds
>>>>> right on your Mail page. Start today at
>>>>> http://mrd.mail.yahoo.com/try_beta?.intl=ca
>>>>> --Send bugs reports to this list.
>>>>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>>>>
>>>>>
>>>>
>>>> --View this message in context:
>>>>
>>> http://www.nabble.com/t-score-statement-in-.orc-tf4322804.html#a12312624 
>>>
>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>>
>>>> --Send bugs reports to this list.
>>>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>>>
>>>
>>>
>>>
>>>       Get news delivered with the All new Yahoo! Mail.  Enjoy RSS 
>>> feeds right on your Mail page. Start today at 
>>> http://mrd.mail.yahoo.com/try_beta?.intl=ca
>>> --Send bugs reports to this list.
>>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>>
>>
>> --Send bugs reports to this list.
>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>

Thanks - portk works for now.  I figured I could just use a control  
rate filter.  Wanted to make sure I wasn't overlooking anything.

Yikes, are you suggesting bundling reinits in UDOs?  That sounds like  
some nasty code. :)

thanks
greg

On Aug 25, 2007, at 7:18 PM, Oeyvind Brandtsegg wrote:

> The simplest way is to use portk or tonek.
> This won't give you a linear sweep though,
> for that you would use a line opcode and reinit, admittedly a bit
> kludgy but could maybe be put into a UDO (if there's not one tht does
> this already).
> Oeyvind
>
>
> 2007/8/26, Greg Thompson :
>>
>>
>> gisin ftgen 0, 0, 4096, 10, 1, 0.5, 0.25, 0.125, 0.0625, 0.03125,  
>> 0.015625
>>
>>     instr 10
>> iBasePitch = p4
>>
>> kFreePitch  chnget "Pitch"
>> kAmpChannel chnget "Amp"
>>
>> kPitch  = cpspch(iBasePitch + kFreePitch)
>>
>> aAmp    interp  kAmpChannel
>>
>> aAmp    = ampdbfs(aAmp)
>>
>> kEnv    line    1.0, p3, 0.0
>>
>> a1      oscili aAmp * kEnv, kPitch, gisin
>>
>>         outs a1, a1
>>
>>     endin
>>
>>
>>
>>
>> So, I have a slider representing pitch and amplitude.  I'm using  
>> channels to
>> pass values into the orchestra.  So, in this case, I'm using the  
>> chnget
>> opcode.
>>
>> I'm wondering how I do some simple form of interpolation so if I  
>> get a value
>> of 1.0 at time t1 and then 2.0 at time t2.  It gradual shifts from  
>> 1.0 to
>> 2.0 over a slew time.  In Max, I would use the line object.
>>
>> Can one suggest a proper way to do this in Csound?
>>
>> thanks
>> greg
> -- 
> Send bugs reports to this list.
> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>

I'm the guilty party. I can't guarantee when I'll get back to this,  
but it won't be any time soon. I do plan on adding elliptical as well  
as bandpass and band block.

On Aug 25, 2007, at 10:35 AM, Jeremy Flores wrote:

> sorry all, i just sent this to the wrong email address. oh well...
>
>
> Jeremy Flores wrote:
>> woot.
>>
>> also, you know if an elliptic filter has a sound very distinctive  
>> from chebyshev? i was trying to use this opcode in csound called  
>> clfilt that gives you the option for butterworth, chebyshev 1 and  
>> 2, or elliptic, but they haven't implemented the elliptic stuff yet.
>>
>> just wondering if it's worth emailing the list to request this.
>>
>> i hope you're doing more this weekend than csound, man :p
>>
>> jeremy
>>
>>
>>
>>
>> Greg Thompson wrote:
>>> The tempo functionality in Csound is not adequate .. I would  
>>> venture to say it does not work well enough for any useful  
>>> application.  I ran up against this problem a few weeks ago.  I  
>>> ended up writing my own sequencer around Csound.  I guess there  
>>> isn't enough demand for this type of thing to be fixed. While I'm  
>>> at it - I will also continue to encourage the following  
>>> improvements:
>>>
>>> - MIDI File opcodes (such that multiple MIDI files can be  
>>> dynamically read in and performed in various ways within one  
>>> instance of Csound)
>>> - separating control rate from sequencing resolution - so ksmps =  
>>> 1 is not necessary.  Basically, I feel the entire sequencing  
>>> engine needs to be redesigned with realtime considerations built in.
>>>
>>> greg
>>>
>>> On Aug 24, 2007, at 4:22 PM, Alex Drader wrote:
>>>
>>>> Thanks for the info.  I did try the beat mode and it's exactly  
>>>> what I
>>>> needed... If it worked.  I thought that because I was using the
>>>> scoreline function that somehow that was what caused the changes  
>>>> to not
>>>> work, but it doesn't seem to matter (I've tried all sorts of
>>>> combinations).  I don't understand.  tempoval displays the changed
>>>> tempo, and yet it doesn't work.  Not one thing I'm trying is going
>>>> through correctly, and your examples show the same thing.  And it's
>>>> just that this is so important right now it's making me angry,  
>>>> cause
>>>> there seems to be no other way for me to change the tempo at any  
>>>> time.
>>>> Is there any way you/or anyone could somehow take a look at the  
>>>> code
>>>> and see if there is a quick fix.  It's just that this is so  
>>>> important
>>>> right now, that it's brought me to a swift stand-still.
>>>>
>>>>
>>>>
>>>>
>>>> --- Jacob Joaquin  wrote:
>>>>
>>>>>
>>>>> You can use the -t flag to run Csound in beat mode.  From  
>>>>> there, I'm
>>>>> not
>>>>> certain of what you would need to make your setup work.  You might
>>>>> try
>>>>> creating an instr that uses the tempo opcode to make realtime  
>>>>> tempo
>>>>> changes,
>>>>> and call it as you need it.  Here's an example:
>>>>>
>>>>>
>>>>> instr 1
>>>>>     tempo p4, 60
>>>>> endin
>>>>>
>>>>>
>>>>>
>>>>> I've had issues with beat mode, as I suspect there are a few
>>>>> unresolved
>>>>> issues with its implementation.  I created a .csd that  
>>>>> demonstrates
>>>>> some of
>>>>> the potential bugs I've found with beat mode:
>>>>>
>>>>> http://www.thumbuki.com/csound/files/mailinglist/flag_t_test.csd
>>>>>
>>>>>
>>>>> Hope this helps.
>>>>>
>>>>> Best,
>>>>> Jake
>>>>>
>>>>> ----
>>>>> The Csound Blog
>>>>> http://www.thumbuki.com/csound/blog
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Uduak wrote:
>>>>>>
>>>>>> Is there no way to dynamically change the parameters of the tempo
>>>>>> statement inside the .orc  I've tried event and scoreline (which
>>>>> won't
>>>>>> allow it).  I'm trying to create a way to midi mix my music using
>>>>> two
>>>>>> instances of csound.  I have a controller that can crossfade and
>>>>>> dj/mix... but I can't find a way to pitch-shift/switch the  
>>>>>> tempo of
>>>>> a
>>>>>> whole song at any time.
>>>>>>
>>>>>>
>>>>>>       Get news delivered with the All new Yahoo! Mail.  Enjoy RSS
>>>>> feeds
>>>>>> right on your Mail page. Start today at
>>>>>> http://mrd.mail.yahoo.com/try_beta?.intl=ca
>>>>>> --Send bugs reports to this list.
>>>>>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>>>>>
>>>>>>
>>>>>
>>>>> --View this message in context:
>>>>>
>>>> http://www.nabble.com/t-score-statement-in-.orc- 
>>>> tf4322804.html#a12312624
>>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>>>
>>>>> --Send bugs reports to this list.
>>>>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>>>>
>>>>
>>>>
>>>>
>>>>       Get news delivered with the All new Yahoo! Mail.  Enjoy  
>>>> RSS feeds right on your Mail page. Start today at http:// 
>>>> mrd.mail.yahoo.com/try_beta?.intl=ca
>>>> --Send bugs reports to this list.
>>>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>>>
>>>
>>> --Send bugs reports to this list.
>>> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>>
>
> -- 
> Send bugs reports to this list.
> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk

----
Prof. R. Erik Spjut (spyoot rhymes with cute)
Engineering Department, Harvey Mudd College, Claremont, CA 91711
erik_spjut@hmc.edu   Ph. (909) 607-3890  Fax (909) 621-8967

But with the default ksmps=10, any inaccuracy is only
10/44100 = 0.226 ms, which is beyond anyone's perception.
With ksmps=10, Csound runs quite efficiently.

Redesigning the engine to have sample accuracy would
involve re-writing much of it. I can't see the gain. And the
efficiency might be lost (say if we were designing some
sort of multi-threaded solution) for certain CPUs (say
single-processor ones.

I agree that multiple MIDI files are desirable. It is not too difficult,
I had a look at it, but it requires some changes to the CSOUND
class and probably an API version increment. Definitely for
one the next releases.

Victor

At 18:16 25/08/2007, you wrote:
>The tempo functionality in Csound is not adequate .. I would venture
>to say it does not work well enough for any useful application.  I
>ran up against this problem a few weeks ago.  I ended up writing my
>own sequencer around Csound.  I guess there isn't enough demand for
>this type of thing to be fixed. While I'm at it - I will also
>continue to encourage the following improvements:
>
>- MIDI File opcodes (such that multiple MIDI files can be dynamically
>read in and performed in various ways within one instance of Csound)
>- separating control rate from sequencing resolution - so ksmps = 1
>is not necessary.  Basically, I feel the entire sequencing engine
>needs to be redesigned with realtime considerations built in.
>
>greg
>
>On Aug 24, 2007, at 4:22 PM, Alex Drader wrote:
>
>>Thanks for the info.  I did try the beat mode and it's exactly what I
>>needed... If it worked.  I thought that because I was using the
>>scoreline function that somehow that was what caused the changes to
>>not
>>work, but it doesn't seem to matter (I've tried all sorts of
>>combinations).  I don't understand.  tempoval displays the changed
>>tempo, and yet it doesn't work.  Not one thing I'm trying is going
>>through correctly, and your examples show the same thing.  And it's
>>just that this is so important right now it's making me angry, cause
>>there seems to be no other way for me to change the tempo at any time.
>>Is there any way you/or anyone could somehow take a look at the code
>>and see if there is a quick fix.  It's just that this is so important
>>right now, that it's brought me to a swift stand-still.
>>
>>
>>
>>
>>--- Jacob Joaquin  wrote:
>>
>>>
>>>You can use the -t flag to run Csound in beat mode.  From there, I'm
>>>not
>>>certain of what you would need to make your setup work.  You might
>>>try
>>>creating an instr that uses the tempo opcode to make realtime tempo
>>>changes,
>>>and call it as you need it.  Here's an example:
>>>
>>>
>>>instr 1
>>>         tempo p4, 60
>>>endin
>>>
>>>
>>>
>>>I've had issues with beat mode, as I suspect there are a few
>>>unresolved
>>>issues with its implementation.  I created a .csd that demonstrates
>>>some of
>>>the potential bugs I've found with beat mode:
>>>
>>>http://www.thumbuki.com/csound/files/mailinglist/flag_t_test.csd
>>>
>>>
>>>Hope this helps.
>>>
>>>Best,
>>>Jake
>>>
>>>----
>>>The Csound Blog
>>>http://www.thumbuki.com/csound/blog
>>>
>>>
>>>
>>>
>>>
>>>Uduak wrote:
>>>>
>>>>Is there no way to dynamically change the parameters of the tempo
>>>>statement inside the .orc  I've tried event and scoreline (which
>>>won't
>>>>allow it).  I'm trying to create a way to midi mix my music using
>>>two
>>>>instances of csound.  I have a controller that can crossfade and
>>>>dj/mix... but I can't find a way to pitch-shift/switch the tempo of
>>>a
>>>>whole song at any time.
>>>>
>>>>
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>>>
>>>--
>>>View this message in context:
>>http://www.nabble.com/t-score-statement-in-.orc- tf4322804.html#a12312624
>>>Sent from the Csound - General mailing list archive at Nabble.com.
>>>
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>>
>>
>>
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>
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Victor Lazzarini
Music Technology Laboratory
Music Department
National University of Ireland, Maynooth