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question about Mono
Old 4 days ago
  #1
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betoschi's Avatar
 

question about Mono

Hi guys from Italy. First of all sorry for my english.
In my daw (ableton live) i have a tool called utility (attached image) which is for gain control, polarity switch etc.
So, here's my question:
for a stereo signal i can reverse L and R "phase", which makes sense. But, what happens for a mono signal? The tool gives me the option to reverse both channels phase too...so a mono signal has two channels?
And if this is true i'm basically listen to a l-r version of my audio program,also called side?
I think I have a Gap about this concept
So confused...sorry for this really newbie question. Hope you can help me.
Thank you in advance.
Attached Thumbnails
question about Mono-schermata-2019-01-14-alle-01.10.40.png  
Old 4 days ago
  #2
Mono is one channel, but the daw output is stereo. Which means mono is interpreted as both left and right being identical. There is sometimes a need, as in MS processing, to reverse the polarity of an output channel.
Old 4 days ago
  #3
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Quote:
Originally Posted by rumleymusic View Post
Mono is one channel, but the daw output is stereo. Which means mono is interpreted as both left and right being identical. There is sometimes a need, as in MS processing, to reverse the polarity of an output channel.
Thank you rumley for answering.
Considering your explanation, if I have a mono sound, clicking on L or R phase invert should I have silence? (because it is the same signal on both channels, one inverted...if I'm right)
I tried with a sample kick (width set to 0) but I can only hear that "out of speakers" effect.
If i run another utility plugin next to the first (with phase buttons unchecked) then i get silence.
still confused
Old 4 days ago
  #4
Since the output of the plugin is tecnically stereo, You won’t get silence unless you collapse the signal to mono again after inverting the polarity. The plugin itself requires a mono input it seems, so it is itself collapsing L and R to a single channel on input. That strange sound you hear is the acoustic Version of noise cancelation. A rather unpleasant sensation.
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