[PD] attack/release for spectral gate [was: is this a spectral gate?]

Tom Erbe tre at music.ucsd.edu
Thu Mar 29 21:53:21 CEST 2007

sorry for the delayed reply - i'm a bit behind on the pd-list...

in my plug, i keep a table of gain factors for each fft band. before  
each fft, i update the gain factors by multiplying by an attack  
multiplier if we are below the threshold or by a release multiplier  
if above the threshold. after that, each gain factor is limited, so  
it doesn't go past the gate gain setting after attack, or past 1.0  
after release.

this recalcing of the gain table only happens once per fft...

the attack multiplier and release multiplier are recalculated based  
on both time and the gate gain setting.

On Mar 29, 2007, at 10:56 AM, Kevin McCoy wrote:

>>>> Of
>>>> course, Tom Erbe's soundhack filters already do this, but he hasn't
>>>> responded to this on how he got attack/release to work for him - it
>>>> may need to be handled differently in Pd as opposed to whatever he
>>>> used to code those VSTs.

- - - - -
tom erbe ~ tre at ucsd.edu ~ studio director - computer music ~ ucsd  
department of music

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