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mid-side stereo processing example
From: |
Eric Wong |
Subject: |
mid-side stereo processing example |
Date: |
Mon, 19 Jan 2015 00:24:32 +0000 |
I just put this together based on an old SoX mailing list post:
http://mid.gmane.org/address@hidden
Not sure if it's worth converting into Ruby and making it officially
a part of dtas (and possibly libifying it for splitfx...)
---------------------------- 8< ------------------------------
#!/bin/sh
# mid-side processing example, based on:
# http://mid.gmane.org/address@hidden
usage () {
echo >&2 "$0 INFILE <mid|side|stereo|merge>"
exit 1
}
set -e
INFILE="$1"
test -n "$INFILE" || usage
TYPE=$2
test -n "$TYPE" || usage
shift 2
mid="remix 1,2"
side="remix 1v0.5,2v-0.5"
export SOX_OPTS=-V3
set -x
OUT=${OUT-"-t alsa"}
t="$TRIMFX"
case $TYPE in
mid) cmd="$mid" ;;
side) cmd="$side" ;;
merge)
# Merge the Mid and Side signals into a stereo file:
exec sox -M "|sox '$INFILE' -p $t $mid" "|sox '$INFILE' -p $t $side" \
$OUT
;;
stereo)
# Convert Mid/Sid stereo to L/R stereo:
exec sox -M "|sox '$INFILE' -p $t $mid" "|sox '$INFILE' -p $t $side" \
$OUT remix -m 1,2 1,2i
;;
esac
exec sox "$INFILE" $OUT $t $cmd
--
EW
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