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Rockbox

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FS#918 - Stereo Narrow (and Stereo Wide and Karaoke)

Attached to Project: Rockbox
Opened by Remo Hofer (remo_hofer) - Thursday, 13 February 2003, 18:48 GMT
Last edited by Björn Stenberg (zagor) - Thursday, 27 February 2003, 16:13 GMT
Task Type Patches
Category Settings
Status Closed
Assigned To No-one
Operating System
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 0%
Votes 0
Private No

Details

This patch implements three new channel configurations
(Stereo Narrow, Stereo Wide, and Karaoke). This
fullfills feature request [622622] and more.

Stereo Narrow is implemented by partially mixing
the left and right channel together
(right = 0.75 * right + 0.25 * left).
This mode is usefull for listening those old mixes,
where left and right are completly separated, with
headphones.

Stereo Wide is implemented by subtracting part of
the left channel from the right channel and vice
versa (right = right - 0.5 left).
This mode can be used when listening through
speakers which are close together (e.g. computer
speakers). Whether the quality of the output
will be acceptable depends a lot on the actual mix.

Karaoke is implemented by completely subtracting
one channel from each other (right = right - left).
On mixes, where the voice comes fully centered from
the middle (most mixes), the voice disapeares
almost completely from the sound. The rest of the
sound can be very thin, if a lot of the instruments
are also comming from the center.

The patch also includes the bug fix patch
[686002] (channel config) simply because I don't
know how to create it separately with cvs.
   stereonarrow.diff (12.1 KiB)
   stereonarrow2.diff (10.6 KiB)
This task depends upon

Closed by  Björn Stenberg (zagor)
Thursday, 27 February 2003, 16:13 GMT
Reason for closing:  Accepted
Comment by Remo Hofer (remo_hofer) - Thursday, 13 February 2003, 18:50 GMT

Somehow I never manage to attach the file with the first
attempt. :-)
Comment by Eric Linenberg (elinenbe) - Thursday, 13 February 2003, 18:53 GMT

just tried the patch on a few songs. Love it (this better be in
the post 2.0 tree :) )
Comment by Björn Stenberg (zagor) - Thursday, 13 February 2003, 21:32 GMT

Yay, cool stuff! I didn't even know the MAS could do this. I
need to read the datasheets more... :-)
Comment by Björn Stenberg (zagor) - Thursday, 13 February 2003, 21:36 GMT

Yay, cool stuff! I didn't even know the MAS could do this. I
need to read the datasheets more... :-)
Comment by Remo Hofer (remo_hofer) - Friday, 14 February 2003, 09:23 GMT

Since patch [686002] is commited to cvs, i have updated
this patch to not include it anymore.
(stereonarrow2.diff)

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