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, which is 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 modeled after compress(1)
and a library API. Compression and decompression run faster than
real-time on most SPARC stations. The implementation has been verified
against the ETSI standard test patterns.

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Source Files
Filename Size Changed Actions
baselibs.conf 0000000097 97 Bytes almost 8 years
gsm-1.0.18.tar.gz 0000064549 63 KB 7 months
libgsm-1.0.13.patch 0000001943 1.9 KB 7 months
libgsm-include.patch 0000000207 207 Bytes almost 13 years
libgsm-paths.patch 0000000632 632 Bytes almost 13 years
libgsm.changes 0000003912 3.82 KB about 1 month
libgsm.spec 0000004414 4.31 KB about 1 month
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