01-27-2008
2 hours for thousands of files does not sound bad. And what happened to the suggestions from the other thread? It seems like you're just starting over again with the same question.
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MIXER(1) The Canonical Csound Reference MIXER(1)
NAME
mixer - Mixes together a number of soundfiles. .
DESCRIPTION
Mixes together a number of soundfiles, starting at different times and with individual channel selection from the input files.
SYNTAX
mixer [OPTIONS ... ] infile [[OPTIONS... ] infile] ...
INITIALIZATION
Flags:
o -A = Generate an AIFF output file.
o -W = Generate an WAV output file.
o -h = Generate an output file with no header.
o -c = Generate 8-bit signed_char sound samples.
o -a = Generate alaw sound samples.
o -u = Generate ulaw sound samples.
o -s = Generate short integer sound samples.
o -l = Generate long (32 bit) integer sound samples.
o -f = Generate floating point samples.
o -F arg = Specifies the gain to be applied to the following input file. If arg is a floating point number that gain is applied uniformly
to the input. Alternatively it could be a file name which specifies a breakpoint file for varying the gain for different periods.
o -S integer = Indicate at which sample to start to mix in the next input file.
o -T fpnum = Indicate at which time (in seconds) to start to mix in the next input file.
o -1 = Mix in channel 1 from next sound file.
o -2 = Mix in channel 2 from next sound file.
o -3 = Mix in channel 3 from next sound file.
o -4 = Mix in channel 4 from next sound file.
o -^ intx inty = Mix in channel x from next sound file as channel y in the output.
o -v = Verbose mode.
o -R = Continually rewrite the header while writing soundfile (WAV/AIFF).
o -H integer = Show a "heart-beat" to indicate progress, in style 1, 2 or 3.
o -N = Alert call (usually ringing the bell) when finished.
o -o fname = output file name (default: test.wav)
EXAMPLES
The default values are
mixer -s -otest -F 1.0 -S 0
For example
mixer -F 0.96 in1.wav -S 300 -2 in2.aiff -S 300 -^4 1 in3.wav -o out.wav
This creates a new sound file with a constant gain of 0.96 from in1.wav with the second channel of in2.aiff mixed in after 300 samples and
channel 4 of in3.wav outpout as channel 1 after 300 samples.
CREDITS
Author: John ffitch
1994
AUTHORS
Barry Vercoe
MIT Media Lab
Author.
Dan Ellis
MIT Media Lab,
Cambridge
Massachussetts
Author.
COPYRIGHT
5.10 08/01/2011 MIXER(1)