Recent Changes - Search:

edit SideBar



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 162 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.

The library is available as 32-bit and 64-bit:

  • If you are compiling a 32-bit program, no special compiler options are needed.
  • If you are compiling a 64-bit program, you have to compile and link your application with "cc -q64" or "gcc -maix64".


Version: 1.0.13-1



Source RPM:

Package dependencies:

  • none

All versions:

Edit - History - Print - Recent Changes - Search
Page last modified on January 08, 2013, at 01:15 PM