hello everybody,

i made this very simple patch in order to mix several audio signal. each audio signal
is summed to his closest neighbor. so obviously when i decrease the volume of one source, it decrease the general volume of the output. how can i avoid that ?
so i would like to adjust the volume of each audio signal without deacreasing the general output. even if one track or more are at zero the master would be at a fixed full volume.

thanks

http://www.pdpatchrepo.info/hurleur/mixing.pd

nobody ?

Are you wanting to maintain say, a constant value of -12dB no matter how many signal sources you have? Or do you just want the output to always be on at a pecified volume? For the later option I would personally just use

[Outbound Audio]
|
| [knob] (Set from 0 to 1)
| /
[*~]
|
[dac~]

However, if you want something along the lines of what I first described, I haven't a clue how to do that, I am sorry! I'm new here myself.

yes i am more interested by what you first described. i would like to maintain the volume at a certain db value for the master and so whatever the volume of each track.
thanks for your interest !

if you have signals with a constant amplitude (like the oscs in your example),
you can multiply the output with the reciprocal of the sum of the input levels. (if all 4 inputs are 1, it is 0.25 for example). otherwise (for more complex signals) you could build something like a compressor.

Just for fun, a cake = f(hunger) mixer
Not scalable (yet)

Edit : oops, little mistake : the first moved fader started at full volume, i uploaded a better version.

eaten_cake = f(how_many_people, hunger)

http://www.pdpatchrepo.info/hurleur/relative_mixing.zip

That is a really cool, and admittedly cleverly themed little patch dwan! Thank you for posting it up for us. It is always so helpful to see the sort of 'behind the scenes' in a patch of which I had an idea for. I know that pouk started the thread, but I was quite interested too.

Thanks ! That was fun to do. How curious, i stumbled upon this today just before reading this thread : http://www.vttoth.com/CMS/index.php/technical-notes/68

thank you for this patch it's exactly what i'm looking for !
it works perfectly ! now i have to study it.

great