<package name="libgsm" project="multimedia:EL5">

  <title>GSM 06.10 Lossy Speech Compressor Library and Utilities</title>

  <description>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.</description>

  <build>

    <disable repository="openSUSE_11.0"/>

    <disable repository="openSUSE_11.1"/>

  </build>

</package>

​