owner-csound-outgoing wrote
>From owner-csound-outgoing Thu Oct  2 07:16:05 1997
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Date: Thu, 2 Oct 97 07:16:05 GMT
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To: owner-csound-outgoing
Subject: BOUNCE Csound: Non-member submission from [Leon Zadorin ]

>From wicked-mentality@usa.net Thu Oct  2 08:16:01 1997 remote from 
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Date: Thu, 02 Oct 1997 17:08:37 +1000 (EST)
From: Leon Zadorin 
Subject: independent sr/kr/ksmps for phys. mod.
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	Dear Folks,

just was wondering if csound could do the individual sr/kr for the
instruments. The input and output of such instruments of course will have
to be resampled to the "common" sr/kr but all calculations and loops within
the instrument would be of independent sr/kr?
	I am writing this in relation to the physical modeling problems in
tuning (since in phys.mod the signal is altered on every cycle - it means
that the delay length has to be equal (in a simple alg. of course) to the
period of frreqeuncy of pitrch. Now, if such frequency if 1k then the delay
length @ 44.1k sr will have to be of 44.1 samples! I know that one can
varispeed delay time, but this introduces some problems at a laters stage
as alg. gets more complex. so what makes sence to me is to calculate such
phys. mod algorhythm at a sr/kr multiple of the freq. of the pitch (for 1k
freq would constitue about 100k sr for example). that way the tuning would
be of correct freq...

	As the result I was thinking that it would be cool to have the
following expression allowed for each instrument:
sr = cpspch(p5)*100 (for example)

I am not sure if csound can already do this independent sr/kr for each
instruments... what do you think?

Best regards - Leon.



-- 
James Andrews, maths CDO, ext.3977