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[ Source: libgsm  ]

Package: libgsm-tools (1.0.13-3)

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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: Command Line, Network Protocol: VoIP, Role: Program, Scope: Utility, Sound and Music: Compression, Playback, Speech Synthesis, Purpose: Playing Media, Works with: Audio

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Architecture Package Size Installed Size Files
amd64 41.6 kB184.0 kB [list of files]
armel 20.1 kB172.0 kB [list of files]
i386 19.8 kB172.0 kB [list of files]
ia64 47.4 kB220.0 kB [list of files]
kfreebsd-amd64 41.6 kB142.0 kB [list of files]
kfreebsd-i386 19.8 kB130.0 kB [list of files]
mips 38.6 kB184.0 kB [list of files]
mipsel 38.7 kB184.0 kB [list of files]
powerpc 44.8 kB184.0 kB [list of files]
s390 43.0 kB184.0 kB [list of files]
sparc 39.9 kB172.0 kB [list of files]