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Pakket: libgsm1-dev (1.0.22-1 en anderen)

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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: Softwareontwikkeling: Ontwikkelen in C, Bibliotheken, Implemented in: C, Network Protocol: protocol::voip, role::devel-lib, Sound and Music: Comprimeren, Speech Synthesis, Works with: Audio

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Pakket downloaden voor alle beschikbare platforms
Platform Versie Pakketgrootte Geïnstalleerde grootte Bestanden
alpha (unofficial port) 1.0.22-1 52,1 kB150,0 kB [overzicht]
amd64 1.0.22-1 b2 34,0 kB121,0 kB [overzicht]
arm64 1.0.22-1 b2 32,5 kB110,0 kB [overzicht]
armel 1.0.22-1 b2 31,5 kB99,0 kB [overzicht]
armhf 1.0.22-1 b2 30,7 kB88,0 kB [overzicht]
hppa (unofficial port) 1.0.22-1 b1 37,4 kB117,0 kB [overzicht]
i386 1.0.22-1 b2 35,0 kB125,0 kB [overzicht]
ia64 (unofficial port) 1.0.22-1 47,3 kB168,0 kB [overzicht]
m68k (unofficial port) 1.0.22-1 b1 30,2 kB110,0 kB [overzicht]
mips64el 1.0.22-1 b2 39,8 kB133,0 kB [overzicht]
ppc64 (unofficial port) 1.0.22-1 b1 36,8 kB124,0 kB [overzicht]
ppc64el 1.0.22-1 b2 37,8 kB122,0 kB [overzicht]
riscv64 1.0.22-1 b2 60,0 kB476,0 kB [overzicht]
s390x 1.0.22-1 b2 37,5 kB118,0 kB [overzicht]
sh4 (unofficial port) 1.0.22-1 b1 36,2 kB96,0 kB [overzicht]
sparc64 (unofficial port) 1.0.22-1 b1 34,9 kB120,0 kB [overzicht]
x32 (unofficial port) 1.0.22-1 b1 34,5 kB113,0 kB [overzicht]