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Package: libgsm1 (1.0.13-4 and others)

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Shared libraries for GSM speech compressor

This package 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 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.

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Download libgsm1

Download for all available architectures
Architecture Version Package Size Installed Size Files
alpha (unofficial port) 1.0.13-4+b2 42.3 kB105.0 kB [list of files]
amd64 1.0.13-4+b2 23.7 kB73.0 kB [list of files]
arm64 1.0.13-4+b2 22.3 kB61.0 kB [list of files]
armel 1.0.13-4+b2 22.5 kB60.0 kB [list of files]
armhf 1.0.13-4+b2 22.6 kB52.0 kB [list of files]
hppa (unofficial port) 1.0.13-4+b2 29.9 kB77.0 kB [list of files]
hurd-i386 1.0.13-4+b2 25.6 kB83.0 kB [list of files]
i386 1.0.13-4+b2 25.6 kB84.0 kB [list of files]
kfreebsd-amd64 1.0.13-4+b2 23.7 kB71.0 kB [list of files]
kfreebsd-i386 1.0.13-4+b2 25.6 kB83.0 kB [list of files]
m68k (unofficial port) 1.0.13-4+b2 22.2 kB80.0 kB [list of files]
mips 1.0.13-4+b2 26.3 kB67.0 kB [list of files]
mips64el 1.0.13-4+b2 28.1 kB75.0 kB [list of files]
mipsel 1.0.13-4+b2 27.3 kB71.0 kB [list of files]
powerpcspe (unofficial port) 1.0.13-4+b2 26.8 kB88.0 kB [list of files]
ppc64 (unofficial port) 1.0.13-4+b2 26.9 kB89.0 kB [list of files]
ppc64el 1.0.13-4+b2 26.4 kB89.0 kB [list of files]
s390x 1.0.13-4+b2 29.8 kB89.0 kB [list of files]
sh4 (unofficial port) 1.0.13-4+b2 26.2 kB60.0 kB [list of files]
sparc64 (unofficial port) 1.0.13-4+b2 25.6 kB74.0 kB [list of files]
x32 (unofficial port) 1.0.13-4+b2 23.9 kB72.0 kB [list of files]