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streson

Date2016-04-21 06:36
FromMichael Mossey
Subjectstreson
Is 'streson' tuned to fractional sample length? A few years ago I was using a UDO written by V. Lazzarini called the "modern waveguide" because it was tuned thusly, but it would be more efficient to use 'streson'. 

Also, I am used to choosing the decay rate with 'modern waveguide' by specifying dB/sec. But streson requires a multiplier. How do I go about choosing that multiplier if I what a decay rate of X dB/sec? I figure the waveguide loops F times in one second for a frequency of F, so it's a matter of solving R^F = D where R is the multiplier provided to 'streson' and D is the desired ratio of decay after one second. Does that sound right?
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Date2016-04-21 08:29
FromVictor Lazzarini
SubjectRe: streson
yes, it does fine-tune. The difference is that it does not lengthen the decay, so the gain control is the only alternative. If you
look in the CSD code, you will see a section calculating the lengthening and another one the shortening of the decay. You
can use the expression in the latter one with streson (which only affects the gain).


========================
Dr Victor Lazzarini
Dean of Arts, Celtic Studies and Philosophy,
Maynooth University,
Maynooth, Co Kildare, Ireland
Tel: 00 353 7086936
Fax: 00 353 1 7086952 

> On 21 Apr 2016, at 06:36, Michael Mossey  wrote:
> 
> Is 'streson' tuned to fractional sample length? A few years ago I was using a UDO written by V. Lazzarini called the "modern waveguide" because it was tuned thusly, but it would be more efficient to use 'streson'. 
> 
> Also, I am used to choosing the decay rate with 'modern waveguide' by specifying dB/sec. But streson requires a multiplier. How do I go about choosing that multiplier if I what a decay rate of X dB/sec? I figure the waveguide loops F times in one second for a frequency of F, so it's a matter of solving R^F = D where R is the multiplier provided to 'streson' and D is the desired ratio of decay after one second. Does that sound right?
> 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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