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:
· -A = Generate an AIFF output file.
· -W = Generate an WAV output file.
· -h = Generate an output file with no header.
· -c = Generate 8-bit signed_char sound samples.
· -a = Generate alaw sound samples.
· -u = Generate ulaw sound samples.
· -s = Generate short integer sound samples.
· -l = Generate long (32 bit) integer sound samples.
· -f = Generate floating point samples.
· -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.
· -S integer = Indicate at which sample to start to mix in the next
input file.
· -T fpnum = Indicate at which time (in seconds) to start to mix in
the next input file.
· -1 = Mix in channel 1 from next sound file.
· -2 = Mix in channel 2 from next sound file.
· -3 = Mix in channel 3 from next sound file.
· -4 = Mix in channel 4 from next sound file.
· -^ intx inty = Mix in channel x from next sound file as channel y
in the output.
· -v = Verbose mode.
· -R = Continually rewrite the header while writing soundfile
(WAV/AIFF).
· -H integer = Show a "heart-beat" to indicate progress, in style 1,
2 or 3.
· -N = Alert call (usually ringing the bell) when finished.
· -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