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Package: libgsm-tools (1.0.13-4 and others)

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User binaries for a GSM speech compressor

This package contains user binaries 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: Accessibility Support: Speech Synthesis, Implemented in: C, User Interface: interface::commandline, protocol::voip, Role: Program, Scope: Utility, Sound and Music: sound::compression, sound::player, Speech Synthesis, Purpose: Playing Media, Supports Format: works-with-format::TODO, works-with::audio

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Download for all available architectures
Architecture Version Package Size Installed Size Files
alpha (unofficial port) 1.0.13-4+b2 17.8 kB130.0 kB [list of files]
amd64 1.0.13-4+b2 17.8 kB130.0 kB [list of files]
arm64 1.0.13-4+b2 17.4 kB130.0 kB [list of files]
armel 1.0.13-4+b2 17.4 kB127.0 kB [list of files]
armhf 1.0.13-4+b2 17.4 kB115.0 kB [list of files]
hppa (unofficial port) 1.0.13-4+b2 17.8 kB130.0 kB [list of files]
hurd-i386 1.0.13-4+b2 18.1 kB118.0 kB [list of files]
i386 1.0.13-4+b2 18.2 kB127.0 kB [list of files]
kfreebsd-amd64 1.0.13-4+b2 17.9 kB127.0 kB [list of files]
kfreebsd-i386 1.0.13-4+b2 18.2 kB121.0 kB [list of files]
m68k (unofficial port) 1.0.13-4+b2 16.9 kB127.0 kB [list of files]
mips 1.0.13-4+b2 17.3 kB124.0 kB [list of files]
mips64el 1.0.13-4+b2 17.5 kB136.0 kB [list of files]
mipsel 1.0.13-4+b2 17.4 kB124.0 kB [list of files]
powerpc 1.0.13-4+b2 16.8 kB223.0 kB [list of files]
powerpcspe (unofficial port) 1.0.13-4+b2 16.7 kB223.0 kB [list of files]
ppc64 (unofficial port) 1.0.13-4+b2 17.1 kB229.0 kB [list of files]
ppc64el 1.0.13-4+b2 17.2 kB226.0 kB [list of files]
s390x 1.0.13-4+b2 18.5 kB142.0 kB [list of files]
sh4 (unofficial port) 1.0.13-4+b2 18.0 kB127.0 kB [list of files]
sparc64 (unofficial port) 1.0.13-4+b2 17.3 kB136.0 kB [list of files]
x32 (unofficial port) 1.0.13-4+b2 17.5 kB115.0 kB [list of files]