22 Aug
2019
22 Aug
'19
10:57 p.m.
Aug 22 2019, Ralf Mardorf has written:
...
On the quick my guess is
Original left channel + inverted right channel = plain_left
Original right channel + inverted left channel = plain_right
Original left channel + inverted plain_left = middle only
Original right channel + inverted plain_right = middle only
...
That sounds good. Unforunately it didn't work. Perhaps too many
differences due to the old tape and having been stored as an MP3. Well,
it was worth a try. the result is good enough, I suppose. :)
Best wishes and thanks,
Jeanette
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24 Aug
24 Aug
12:48 p.m.
New subject: Filtering out everything but the centre position in stereo
On Fri, 23 Aug 2019 at 01:44, Jeanette C. <julien(a)mail.upb.de> wrote:
is there an effect or a method to filter out everything from a stereo file but
the "centre"? A sort of reverse karaoke effect.
Hi, my reply is interleaved with others below.
On Fri, 23 Aug 2019 at 04:57, Jeanette C. <julien(a)mail.upb.de> wrote:
Aug 22 2019, Ralf Mardorf has written:
> On the quick my guess is
>
> Original left channel + inverted right channel = plain_left
> Original right channel + inverted left channel = plain_right
L + (-R) = L-R = X = what was called above "plain_left"
R + (-L) = R-L = Y = what was called above "plain_right"
> Original left channel + inverted plain_left =
middle only
> Original right channel + inverted plain_right = middle only
L + (-X) = L - X = L - (L - R) = L - L + R = R
R + (-Y) = R - Y = R - (R - L) = R - R + L = L
So you finish with the same signals that you started with,
except that the channels are swapped.
That sounds good. Unforunately it didn't work.
Both aspects explained above :)
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