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Package: libgsm1-dev (1.0.13-4 and others)

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Development libraries for a GSM speech compressor

This package contains header files and development 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.

Tags: Software Development: C Development, Libraries, Implemented in: C, Network Protocol: protocol::voip, role::devel-lib, Sound and Music: Compression, Speech Synthesis, Works with: Audio

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Download libgsm1-dev

Download for all available architectures
Architecture Version Package Size Installed Size Files
alpha (unofficial port) 1.0.13-4+b2 47.2 kB153.0 kB [list of files]
amd64 1.0.13-4+b2 27.8 kB116.0 kB [list of files]
arm64 1.0.13-4+b2 26.5 kB101.0 kB [list of files]
armel 1.0.13-4+b2 26.9 kB98.0 kB [list of files]
armhf 1.0.13-4+b2 26.8 kB88.0 kB [list of files]
hppa (unofficial port) 1.0.13-4+b2 33.9 kB112.0 kB [list of files]
hurd-i386 1.0.13-4+b2 29.9 kB125.0 kB [list of files]
i386 1.0.13-4+b2 29.8 kB125.0 kB [list of files]
kfreebsd-amd64 1.0.13-4+b2 27.8 kB116.0 kB [list of files]
kfreebsd-i386 1.0.13-4+b2 29.9 kB125.0 kB [list of files]
m68k (unofficial port) 1.0.13-4+b2 26.1 kB109.0 kB [list of files]
mips 1.0.13-4+b2 31.5 kB112.0 kB [list of files]
mips64el 1.0.13-4+b2 33.5 kB131.0 kB [list of files]
mipsel 1.0.13-4+b2 32.7 kB116.0 kB [list of files]
powerpc 1.0.13-4+b2 30.1 kB102.0 kB [list of files]
powerpcspe (unofficial port) 1.0.13-4+b2 30.8 kB102.0 kB [list of files]
ppc64 (unofficial port) 1.0.13-4+b2 30.8 kB117.0 kB [list of files]
ppc64el 1.0.13-4+b2 30.7 kB113.0 kB [list of files]
s390x 1.0.13-4+b2 34.0 kB132.0 kB [list of files]
sh4 (unofficial port) 1.0.13-4+b2 30.3 kB93.0 kB [list of files]
sparc64 (unofficial port) 1.0.13-4+b2 30.7 kB120.0 kB [list of files]
x32 (unofficial port) 1.0.13-4+b2 27.9 kB108.0 kB [list of files]