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* mid-side stereo processing example
@ 2015-01-19  0:24 Eric Wong
  0 siblings, 0 replies; only message in thread
From: Eric Wong @ 2015-01-19  0:24 UTC (permalink / raw)
  To: dtas-all

I just put this together based on an old SoX mailing list post:

Not sure if it's worth converting into Ruby and making it officially
a part of dtas (and possibly libifying it for splitfx...)
---------------------------- 8< ------------------------------
# mid-side processing example, based on:
# http://mid.gmane.org/72D2BEA8-3801-41EF-9BF0-364EACAE4C05@music.mcgill.ca
usage () {
	echo >&2 "$0 INFILE <mid|side|stereo|merge>"
	exit 1
set -e
test -n "$INFILE" || usage
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"}

case $TYPE in
mid) cmd="$mid" ;;
side) cmd="$side" ;;
	# Merge the Mid and Side signals into a stereo file:
	exec sox -M "|sox '$INFILE' -p $t $mid" "|sox '$INFILE' -p $t $side" \
	# Convert Mid/Sid stereo to L/R stereo:
	exec sox -M "|sox '$INFILE' -p $t $mid" "|sox '$INFILE' -p $t $side" \
		$OUT remix -m 1,2 1,2i
exec sox "$INFILE" $OUT $t $cmd

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