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.