adding signals

Nov 16, 2009 at 8:53pm

adding signals

had a little search for this in the forum but couldn’t find exactly what i was looking for

i have always been curious to know what the difference is between the two methods of adding signals i have shown below

i am working on a project that adds quite a large number of signals together, i was wondering what is the best way (sound quality) to go about adding the signals? i imagine i’ll have to do some reading up on dithering too, are there any quick and easy solutions?

– Pasted Max Patch, click to expand. –

#46479

Emmanuel Jourdan

Emmanuel Jourdan 1 37

Nov 17, 2009 at 1:23am

It’s exactly the same thing.

#167292

Mike S

Mike S 1 1 101

Nov 17, 2009 at 2:12am

oh……..

#167293

jvkr

jvkr 129

Nov 17, 2009 at 3:22pm

Quote:

It’s exactly the same thing.

Is it? I would say that the first case adds four signals together to which 0 is added: 4 additions. In the second case 3 additions are required. Or: better not to leave the second inlet empty.

#167294

Roman Thilenius

Roman Thilenius 243 102

Nov 17, 2009 at 4:41pm

or why not use an empty abstraction with only an inlet
and an outlet to sum the signals.

or will that explose u komputah?

-110

#167295

Emmanuel Jourdan

Emmanuel Jourdan 1 37

Nov 17, 2009 at 5:09pm

inlet/outlet don’t sum the signal. I wouldn’t go that way.

#167296

Roman Thilenius

Roman Thilenius 243 102

Nov 17, 2009 at 6:03pm

no but somewhere they will always go into the next DSP
object, dont they. Smile

it is not that i dont understand the his question. maybe
it is wrong that do that here, but i wanted to point out
that you do not need *~ at all for summing in practice.

(sometimes i think i should post when bored.)

#167297

Emmanuel Jourdan

Emmanuel Jourdan 1 37

Nov 17, 2009 at 8:18pm

let me clarify my first response. The difference between the 2 solutions shouldn’t be considered as problematic performance wise. That doesn’t mean that summing is not a good idea. For instance, the patch bellow is bad, because the summing only happens in the receive~ object, so the sum is done twice.

– Pasted Max Patch, click to expand. –

#167298

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