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Topic: Invert Phase Without Transcoding? (Read 7352 times) previous topic - next topic
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Invert Phase Without Transcoding?

I have some MP3 that are 180* out of phase.  Is it possible to invert one channel without transcoding the entire file?

Tony

Invert Phase Without Transcoding?

Reply #1 –
Quote from: Funkstar De Luxe on
Is it possible to invert one channel without transcoding the entire file?


AFAIK there's no software available for the job.

But to answer your question: Yes, in case no intensity stereo has been used or you just want both channels to be inverted. No, in case you want only one channel inverted and intensity stereo has been used.

Cheers!
SG

Invert Phase Without Transcoding?

Reply #2 –
Quote from: SebastianG on
Quote from: Funkstar De Luxe on

Is it possible to invert one channel without transcoding the entire file?


AFAIK there's no software available for the job.

But to answer your question: Yes, in case no intensity stereo has been used or you just want both channels to be inverted. No, in case you want only one channel inverted and intensity stereo has been used.

Cheers!
SG

So far I have been unable to figure out how one channel could be inverted losslessly in the case of a M/S frame. I seem to only get both channels inverted or both channels swapped or both channels inverted and swapped.

Invert Phase Without Transcoding?

Reply #3 –
Quote from: pdq on
So far I have been unable to figure out how one channel could be inverted losslessly in the case of a M/S frame.


Inverting one channel only involves swapping M and S

Inverting R = swapping M and S
Inverting L = swapping M and S and inverting both, M & S
Inverting L and R = inverting M & S
Swapping L and R = inverting S

Cheers!
SG

Invert Phase Without Transcoding?

Reply #4 –
Quote from: SebastianG on
Quote from: pdq on

So far I have been unable to figure out how one channel could be inverted losslessly in the case of a M/S frame.


Inverting one channel only involves swapping M and S

Inverting R = swapping M and S
Inverting L = swapping M and S and inverting both, M & S
Inverting L and R = inverting M & S
Swapping L and R = inverting S

Cheers!
SG

Excellent

Invert Phase Without Transcoding?

Reply #5 –
Has anyone implemented in code this solution? I want to fix one song which almost surely won't be ever available as lossless.
a fan of AutoEq + Meier Crossfeed