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 | 000006592864.4 KB | 1191166081about 17 years ago | |
libgsm-include.patch | 0000000207207 Bytes | 1191166084about 17 years ago | |
libgsm-paths.patch | 0000000632632 Bytes | 1191166088about 17 years ago | |
libgsm-strict-aliasing.patch | 0000000216216 Bytes | 1191166090about 17 years ago | |
libgsm.spec | 00000054635.33 KB | 1225566556about 16 years ago | |
libgsm_1.0.10-13.patch | 00000069956.83 KB | 1191166095about 17 years ago |
Latest Revision
hostmaster
committed
over 14 years ago (revision 1)
osc copypac from project:multimedia package:libgsm revision:2