radiance
Well-known member
Don't know if it belongs in the brewery...
Also don't know if this has been discussed before...
Anyway, here goes.
M/S processing is not 100% accurate.
For example, let's take a stereo file with low audio on the left side (below 100Hz) and high (above 10.000Hz) on the right.
The M/S encoding process goes as follows:
L-R - for the side material. Leaves us with a mono signal containing audio below 100Hz and (polarity inverted) audio above 10.000Hz
L+R - for the mid material. Leaves us with a mono signal containing audio below 100Hz and audio above 10.000Hz
We'll process the side material with a high cut at 5000Hz, cutting away ALL the right side audio.
Now let's decode the signal.
L-R + L+R = 2L
Now what does this 2L signal contain exactly?
2 X the <100Hz audio
PLUS
1 X the >10.000Hz audio since ALL the right side (polarity inverted) audio was taken away during the processing of the side material.
Try it yourself.....
Is there a way to really separate the side from the mid signal leaving us with three signals, mono, left side, right side?
I can't get my head around this, I've done the math but I think it's not possible...
Also don't know if this has been discussed before...
Anyway, here goes.
M/S processing is not 100% accurate.
For example, let's take a stereo file with low audio on the left side (below 100Hz) and high (above 10.000Hz) on the right.
The M/S encoding process goes as follows:
L-R - for the side material. Leaves us with a mono signal containing audio below 100Hz and (polarity inverted) audio above 10.000Hz
L+R - for the mid material. Leaves us with a mono signal containing audio below 100Hz and audio above 10.000Hz
We'll process the side material with a high cut at 5000Hz, cutting away ALL the right side audio.
Now let's decode the signal.
L-R + L+R = 2L
Now what does this 2L signal contain exactly?
2 X the <100Hz audio
PLUS
1 X the >10.000Hz audio since ALL the right side (polarity inverted) audio was taken away during the processing of the side material.
Try it yourself.....
Is there a way to really separate the side from the mid signal leaving us with three signals, mono, left side, right side?
I can't get my head around this, I've done the math but I think it's not possible...