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Shared libraries for GSM speech compressor

This package contains runtime shared libraries for libgsm, an implementation of the European GSM 06.10 provisional standard for full-rate speech transcoding, prI-ETS 300 036, which uses RPE/LTP (residual pulse excitation/long term prediction) coding at 13 kbit/s.

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.

Package version:1.0.13-3


GSM 06.10 13 kbit/s RPE/LTP speech compression available

The Communications and Operating Systems Research Group (KBS) at the
Technische Universitaet Berlin is currently working on a set of
UNIX-based tools for computer-mediated telecooperation that will be
made freely available.

As part of this effort we are publishing an implementation 


libgsm (1.0.13-3) unstable; urgency=low

  * Fix cut and paste error in long description (Closes: #544896)

 -- Jochen Friedrich <>  Mon, 19 Oct 2009 16:25:39 +0200

libgsm (1.0.13-2) unstable; urgency=low

  * Fix long descriptions (Closes: #544896)
  * Fix lintain warnings:
   o Add README.source pointing to dpatch documentation
   o Add patch to fix man pages

 -- Jochen Friedric


Sun Apr  5  04:53:07 2009       Jutta Degener (

	* 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 (

	* 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.)


This is the Debian GNU/Linux prepackaged version of libgsm, an implementation of the
European GSM 06

Browse inside libgsm1_1.0.13-3_amd64.deb

         [DIR]DEBIAN/ (5)  65535+ mirrors
         [DIR]usr/ (2)  65535+ mirrors

Download libgsm1_1.0.13-3_amd64.deb

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