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Package: libgsm1 (1.0.18-1)

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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, this 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 Package Size Installed Size Files
alpha (unofficial port) 45.5 kB111.0 kB [list of files]
amd64 26.9 kB87.0 kB [list of files]
arm64 26.8 kB70.0 kB [list of files]
armel 26.4 kB70.0 kB [list of files]
armhf 25.7 kB58.0 kB [list of files]
hppa (unofficial port) 33.4 kB87.0 kB [list of files]
hurd-i386 28.6 kB94.0 kB [list of files]
i386 28.7 kB94.0 kB [list of files]
kfreebsd-amd64 27.0 kB79.0 kB [list of files]
kfreebsd-i386 28.7 kB90.0 kB [list of files]
m68k (unofficial port) 25.9 kB86.0 kB [list of files]
mips 29.3 kB76.0 kB [list of files]
mips64el 32.0 kB84.0 kB [list of files]
mipsel 30.3 kB80.0 kB [list of files]
powerpcspe (unofficial port) 29.1 kB94.0 kB [list of files]
ppc64 (unofficial port) 30.9 kB94.0 kB [list of files]
ppc64el 31.1 kB94.0 kB [list of files]
riscv64 (unofficial port) 33.0 kB78.0 kB [list of files]
s390x 33.3 kB90.0 kB [list of files]
sh4 (unofficial port) 29.8 kB70.0 kB [list of files]
sparc64 (unofficial port) 28.2 kB79.0 kB [list of files]
x32 (unofficial port) 27.0 kB82.0 kB [list of files]