how to init a mem array on voice retriggering?

Tzarls · 6 Oct 2009

If you use stage 0, that part of the code will only be executed once when the process is initialized, AFAIk. One way would be to force a recompile, making the retrigger to disconnect and reconnect the code block using a selector.

The other way would be to use a conditional jump in ASM, in such a way that the reinit loop is only executed when a retrigger (1?) is received.

MichaelBenjamin · 6 Oct 2009

that asm jump might work but it will be some time untill i translate this. any other temporary solution in code?

rl · 6 Oct 2009

huh? AFAIK stage (0) should be the way to go. Maybe you should file a bug report

exonerate · 6 Oct 2009

I think setting "using samples" to true in the midi to poly will work.

Without that set when retriggering a note it uses the same voice and so there is no new initialization stage.

Cheers 😉

Exo

MichaelBenjamin · 6 Oct 2009

i tried all the green settings but it made no difference. i will re-check the stage 0 init in an isolated module, maybe the problem is somewhere else, but so far it sounded like the mem content was being carried over when max poly was reached and a voice was stolen.

rl · 6 Oct 2009

did some tests... indeed it's not as easy as I thought. Sure, stage(0) is executed when a new voice is created. But pressing a note seems to not necessarily trigger a new voice.

Test: put this code between the frequency out of a MIDI to Poly module and the freq input of an oscillator. It creates a rising pitch tone. When stage(0) is executed the pitch is reset. Now repeatedly hit the same note => the pitch does not reset.

streamin i; streamout o;

float a0;

stage (0) { a0 = 0.01; } a0=a0+0.001; o=a0 + i;

Here's a method to reach the desired behaviour using the env module. The variable a0 is initialized when stage has the value 1 (it has it for one sample)

This isn't really helpful in your case, since for initializing the array you would need to code like:

a[0]=(stage!=1)&a[0]; a[1]=(stage!=1)&a[1]; a[2]=(stage!=1)&a[2]; ... a[255]=(stage!=1)&a[255];

MichaelBenjamin · 6 Oct 2009

good test, but yes this wont work with a mem array. since stage 0 obviously does not get retriggered when a voice gets stolen the only solution i can think of would be with a update.

mwvdlee · 27 Mar 2010

rl wrote: This isn't really helpful in your case, since for initializing the array you would need to code like:

a[0]=(stage!=1)&a[0]; a[1]=(stage!=1)&a[1]; a[2]=(stage!=1)&a[2]; ... a[255]=(stage!=1)&a[255];

How about something like this:

float retrig;

retrig = stage!=1; loop(256) { mem[index]=retrig&mem[index]; index=index+1; }