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GSM 06.10 Lossy Speech Compressor Library and Utilities

Contains libraries and binaries for a GSM speech compressor. libgsm
contains a standard 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.

Source Files

Filename Size Changed Actions
gsm-1.0.10.tar.gz 64.4 KB about 17 years ago Download File
libgsm-include.patch 207 Bytes about 17 years ago Download File
libgsm-paths.patch 632 Bytes about 17 years ago Download File
libgsm-strict-aliasing.patch 216 Bytes about 17 years ago Download File
libgsm.spec 5.33 KB about 16 years ago Download File
libgsm_1.0.10-13.patch 6.83 KB about 17 years ago Download File

Latest Revision

hostmaster hostmaster committed over 14 years ago (revision 1)
osc copypac from project:multimedia package:libgsm revision:2

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