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UNIX for Dummies Questions & Answers
Redirect output to the same input file in awk
Post 302936356 by anbu23 on Wednesday 25th of February 2015 02:48:25 AM
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LEARN ABOUT LINUX
mixer
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
5.07 06/23/2009 MIXER(1)