qwavsilence(1)							 quelcom man pages						    qwavsilence(1)

NAME

       qwavsilence - detect and shrink silence sequences in wav files

SYNOPSIS

       qwavsilence [option]... file...

DESCRIPTION

       qwavsilence reads a list of wav files looking for silence sequences.

OPTIONS

       -d <duration>[<format>], --duration=<duration>[<format>]
	      duration	is  a  positive  integer  that	specifies the minimum duration of a silent sequence on a file to be reported. the value is
	      treated as a sample number unless a format specifier is used. see the FORMATS section below for information. the	default  value	is
	      one second.

       -h, --help
	      show a brief help and exit.

       -S, --shrink
	      when  this  option  is set, all the silent sequences greater than duration will be shrinked down to duration and the file size trun-
	      cated accordingly.

       -t <threshold>, --threshold=<threshold>
	      threshold is a percentage value respect the maximum (absolute) sample value. samples whose value is under the  given  threshold  are
	      considered  silent. for example, a value of 2 means that all samples with absolute value under the 2% will be treated as silent sam-
	      ples. the default value is 0.

       -v, --verbose
	      show more detailed info.

       -V, --version
	      show version and exit.

FORMATS

       the following modifiers are provided:

       j      value is interpreted as milliseconds.

       m      value is interpreted as minutes.

       s      value is interpreted as seconds.

       b      value is interpreted as bytes.

       k      value is interpreted as kbytes (1024 bytes).

       M      value is interpreted as megabytes (1024 kbytes).

       in either case, the values specified will be rounded to get an integer number of samples.

BUGS

       tests has been done only with 44100 Hz 16 bit stereo files, though it may work with mono/stereo 8/16 bits files.

AUTHOR

       dmanye@etse.urv.es
       http://www.etse.urv.es/~dmanye/quelcom/quelcom.html

SEE ALSO

       qwavinfo(1), qwavjoin(1), qwavcut(1), qwavfade(1), qwavheaderdump(1)
       qmp3info(1), qmp3join(1), qmp3cut(1), qmp3check(1), qmp3report(1)

quelcom 0.4.0							   february 2001						    qwavsilence(1)