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GSM 06.10 compresses frames of 160 13-bit samples (8 kHz sampling rate, i.e. a frame rate of 50 Hz) into 260 bits; for compatibility with typical UNIX applications, our implementation turns frames of 160 16-bit linear samples into 33-byte frames (1650 Bytes/s). The quality of the algorithm is good enough for reliable speaker recognition; even music often survives transcoding in recognizable form (given the bandwidth limitations of 8 kHz sampling rate).
The interfaces offered are a front end modelled after compress(1), and a library API. Compression and decompression run faster than realtime on most SPARCstations. The implementation has been verified against the ETSI standard test patterns.
TOAST(1) TOAST(1) NAME toast — GSM 06.10 lossy sound compression SYNOPSIS toast [ -cdfpvhualsFC ] [ filename... ] untoast [ -cfpvhuaslF ] [ filename... ] tcat [ -vhuaslF ] [ filename... ] DESCRIPTION Toast compresses the sound files given on its command line. Each file is replaced by a file with more»
libgsm (1.0.13-4+b1) sid; urgency=low * Binary-only non-maintainer upload for hurd-i386; no source changes. * Rebuild without debian-ports packages -- Debian GNU/Hurd Build Daemon <firstname.lastname@example.org> Sun, 13 May 2012 12:31:24 +0200 libgsm (1.0.13-4) unstable; urgency=low [ Jari Aalto ] * Remove deprecated dpatch and upgrade to packaging format "3.0 quilt". more»
Sun Apr 5 04:53:07 2009 Jutta Degener (email@example.com) * Release 1.0 Patchlevel 13 COPYRIGHT: exploring the deeper meaning and cultural history of the word "any". Fri Jun 2 06:27:56 2006 Jutta Degener (firstname.lastname@example.org) * Release 1.0 Patchlevel 12 src/code.c: removed modifiable static storage that made the library non-reentrant. (Thanks to Paul Gibbs for pointing out the bug.) more»
This is the Debian GNU/Linux prepackaged version of libgsm, an implementation of the European GSM 06 more»