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Package: libgsm1-dev (1.0.18-2)

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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, 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.

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 Package Size Installed Size Files
alpha (unofficial port) 48.6 kB148.0 kB [list of files]
amd64 29.0 kB113.0 kB [list of files]
arm64 29.4 kB106.0 kB [list of files]
armel 29.0 kB97.0 kB [list of files]
armhf 28.2 kB85.0 kB [list of files]
hppa (unofficial port) 35.0 kB108.0 kB [list of files]
i386 31.1 kB121.0 kB [list of files]
m68k (unofficial port) 27.6 kB105.0 kB [list of files]
mips64el 35.5 kB130.0 kB [list of files]
mipsel 33.8 kB113.0 kB [list of files]
powerpcspe (unofficial port) 31.0 kB98.0 kB [list of files]
ppc64 (unofficial port) 33.1 kB122.0 kB [list of files]
ppc64el 33.7 kB118.0 kB [list of files]
riscv64 (unofficial port) 56.9 kB445.0 kB [list of files]
s390x 35.7 kB124.0 kB [list of files]
sh4 (unofficial port) 31.7 kB91.0 kB [list of files]
sparc64 (unofficial port) 31.0 kB115.0 kB [list of files]
x32 (unofficial port) 29.0 kB104.0 kB [list of files]