Buma

I build a patch containing multiple recording units, each of these units are composed by the (buffer~+ poke~ + index~) trio.

I noticed that after the patch is loaded and the ADC / DAC is activated, if the buffer is still empty, the signal coming from the ADC pass through the DAC, even if there is no patch cord connecting the ADC to the DAC... And the sound source is really distorted.

If i disconnect the signal cord between the adc~ and poke~ and reconnect it again, the problem disappears, no signal goes to the dac~

Here's a simple example without the count~ object etc.

Can you tell if there's something wrong with it ? I'm wondering if the problem comes from the patch, from Max or from my soundcard or anything else ..

Hi,
I build a patch containing multiple recording units, each of these units are composed by the (buffer~+ poke~ + index~) trio.

I noticed that after the patch is loaded and the ADC / DAC is activated, if the buffer is still empty, the signal coming from the ADC pass through the DAC, even if there is no patch cord connecting the ADC to the DAC... And the sound source is really distorted. 

If i disconnect the signal cord between the adc~ and poke~ and reconnect it again, the problem disappears, no signal goes to the dac~
The normal behaviour then...

Here's a simple example without the count~ object etc. 

Can you tell if there's something wrong with it ? I'm wondering if the problem comes from the patch, from Max or from my soundcard or anything else ..
Thanks !


poke-index-noise-issue

does your example patch still cause the same issue? If so, I would guess that it might be a soundcard I/O routing issue, as that patch is noise-free on my machine, although I do get microphonic feedback when using my onboard soundchip - the mic picks up the speaker output. Which is a bit unexpected; as you point out, the adc is not virtually/graphically connected to the dac.

Hi
does your example patch still cause the same issue? If so, I would guess that it might be a soundcard I/O routing issue, as that patch is noise-free on my machine, although I do get microphonic feedback when using my onboard soundchip - the mic picks up the speaker output. Which is a bit unexpected; as you point out, the adc is not virtually/graphically connected to the dac.

. . . . reinstantiating the buffer WITHOUT a size argument makes the problem disappear.

. . . .  reinstantiating the buffer WITHOUT a size argument makes the problem disappear.

Yes, this short example still causes the issue. I tested all other objects contained in my full patch. I thought that swanramp~ was the cause but it's not. The Adc signal is output from index~ if I plug a scope~ to it but normally it is bypassed and one should not hear anything until the count~ start.

Oh, okay. I will try. Thank you very much.

removing the size argument of the buffer does indeed solve the problem. But keeping it and setting the count~ (connected to the index~) initial argument to 1 and keeping the buffer size arg. solves the issue.

removing the size argument of the buffer does indeed solve the problem.  But keeping it and setting the count~ (connected to the index~) initial argument to 1  and keeping the buffer size arg. solves the issue.
Thanks again Brendan.


Sometimes collaborative improvisation is successful.

Poke~ & Index~ noise issue