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 truncated 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 samples. the default value is 0.
- -v, --verbose
- show more detailed info.
- -V, --version
- show version and exit.
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)