[PD] Help with compressor/limiter abstraction

[Gunter Geiger]

Frank,

I attach a simple compressor that I made, it is doing most of its 
calculations
in dB. This one doesn't have the nonlinear compression below the
threshold as yours and for simplicity I left out the delay, also
the attack and decay calculations are simplified. I use it for teaching, 
so I
think the calculations for the compression factor are pretty clear and 
intuitive.

Günter


Frank Barknecht wrote:
> Hallo,
> Frank Barknecht hat gesagt: // Frank Barknecht wrote:
>
>   
>> I'm trying to build a pure-Pd compressor/limiter effect.
>>     
>
> Attached is a slightly better version, which now uses a snapshot~ to
> get the current gain, which then is compared to the target gain to
> calculate the next gain. Now it seems to be possible to actually
> compress audio with it, if you set a low threshold (~ 0.2), a sharp
> attack (~1ms), and comp1 to some small value (or 1/comp1 to a large
> one) while keeping comp1 at 1.
>
> Testing and comments would be cool!
>
> Ciao
>   
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