Quantizer And Peak Follower?

unkargherth · 12 May 2005

A quantizer is trivial, Multiply your float by you int range and connect teh ouput to a Data::Int. Thats all

If you need it for poly's this code should work

poly in i; polyout o; o=rndint(i);

Is that what you asking for?

For a simple peak ( env) follower, i posted a very basic one somedays ago A more advanced version (with definable attack and release) is coming

Tom7777 · 12 May 2005

Unkargherth thanks for your reply, I had asked Malc about this and he says -

This is also possible already using Poly to Poly Int. Smoothing can be done using the code component – see the Smooth module in the example.

I should be able to do exactly what i want now thanks to both of you, that code was a lot simpler than i thought it might be and is sort of what i wanted so thanks im sure i can figure it out now 🙂

For a simple peak ( env) follower, i posted a very basic one somedays ago A more advanced version (with definable attack and release) is coming

Great i can't wait, Thanks Unkargherth 🙂

unkargherth · 13 May 2005

Then don't wait. Here it is. I'm bit tired to upload schematics to my provider so here is teh code

polyin in; polyin att; //attack in samples polyin dec; //decay in samples polyin tol; // tolerance polyout env;

// Peak/Envelope Follower with setable attack and release //(C) Unkargherth 2005, based on code from // Bram at musicdsp.org. Use ay your own risk

float coeff;coeff=0.135335; float tmp,tmp2,tmp3; float natt, ndec;

natt=coeff/att; ndec=coeff/dec;

// get absolute value tmp = (in>=0)&in + (in<0)&(-1*in); tmp2=natt*(tmp-env); tmp3=ndec*(tmp-env);

env = (tmp>(env+tol))&tmp2 + (tmp<=(env+tol))&tmp3 + env;

Tolerance is a value between 0 and 1 ( i sugest less than 0.1) that helps to avoid "jitter" when signal changes fats around current envelope level

Tom7777 · 13 May 2005

Amazing 🙂

Nu Audio Science · 13 May 2005

Tired tired, Im surprised you haven't dropped the amount of stuff you been doing 🙂

cbit · 14 Aug 2005

basic question:

i know this is an oldish thread and all ..

but i'd like to experiment with the envelope follower code, and i was wondering if there was a way of hooking up something to the code's output to give visual feedback of what the output was doing over time?

cbit · 16 Aug 2005

(anyone? 🙂 )

stefan · 17 Aug 2005

You could always draw it's output using an analyser or so? Or like in the "multitrack recorder" example jorge posted?

cbit · 17 Aug 2005

will look it up, thanks 🙂

platinumears · 17 Aug 2005

I often use a "Mono to Float" module clocked with "Ticker 25".. usually just displaying the value, but you could use a VU type display if you wanted.

Dan W 🙂