mixer

Langue: en

Version: 06/05/2009 (debian - 07/07/09)

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Section: 1 (Commandes utilisateur)

Sommaire

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.