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UNIX for Dummies Questions & Answers
Reading compressed files during a grep search
Post 302436842 by ryan.lee on Tuesday 13th of July 2010 09:15:18 AM
07-13-2010
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LEARN ABOUT LINUX
scale
SCALE(1) The Canonical Csound Reference SCALE(1) NAME
scale - Scale the amplitude of a sound file. . DESCRIPTION
Takes a sound file and scales it by applying a gain, either constant or variable. The scale can be specified as a multiplier, a maximum or a percentage of 0db. SYNTAX
scale [OPTIONS ... ] infile INITIALIZATION
Flags: o -A = Generate an AIFF outout file. o -W = Generate an WAV outout file. o -h = Generate an outout 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. 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 -M fpnum = Scales the input so the maximum absolute displacement is the value given. o -P fpnum = Scales the input so the maximum absolute displacement is the pencentage given of 0db. 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
scale -s -W -F 0.96 -o out.wav sound.wav This creates a new sound file with a constant gain of 0.96. It is particularly useful if the input file is in floating point format. 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 SCALE(1)