02-10-2013
Please mention the aim of doing what you are asking, with input and output samples.
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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)