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GSM 06.10 Lossy Speech Compressor Library and Utilities

Edit Package libgsm

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
baselibs.conf 0000000097 97 Bytes
gsm-1.0.13.tar.bz2 0000057575 56.2 KB
libgsm-1.0.13.patch 0000006011 5.87 KB
libgsm-include.patch 0000000207 207 Bytes
libgsm-paths.patch 0000000632 632 Bytes
libgsm-strict-aliasing.patch 0000000216 216 Bytes
libgsm.changes 0000002200 2.15 KB
libgsm.spec 0000007722 7.54 KB
Revision 18 (latest revision is 30)
Ismail Dönmez's avatar Ismail Dönmez (namtrac) accepted request 131299 from Cristian Morales Vega's avatar Cristian Morales Vega (RedDwarf) (revision 18)
license update: ISC
#License is more akin to ISC (see http://www.spdx.org/licenses/ISC) than to BSD-3-Clause (forwarded request 131230 from babelworx)
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