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author | kpfleming <kpfleming@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-03-03 18:14:35 +0000 |
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committer | kpfleming <kpfleming@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-03-03 18:14:35 +0000 |
commit | a7de4be0d5d01425755a1bb33dd81c811b52c579 (patch) | |
tree | a99936572577ee64e1dc351307de1bd656809a91 /1.2-netsec/codecs/gsm/README | |
parent | 67da2f8263b4e9bb5522fa59b27e143381d69774 (diff) |
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diff --git a/1.2-netsec/codecs/gsm/README b/1.2-netsec/codecs/gsm/README deleted file mode 100644 index cb6af85cf..000000000 --- a/1.2-netsec/codecs/gsm/README +++ /dev/null @@ -1,37 +0,0 @@ - -GSM 06.10 13 kbit/s RPE/LTP speech compression available --------------------------------------------------------- - -The Communications and Operating Systems Research Group (KBS) at the -Technische Universitaet Berlin is currently working on a set of -UNIX-based tools for computer-mediated telecooperation that will be -made freely available. - -As part of this effort we are publishing 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. - -Jutta Degener (jutta@cs.tu-berlin.de) -Carsten Bormann (cabo@cs.tu-berlin.de) - -Communications and Operating Systems Research Group, TU Berlin -Fax: +49.30.31425156, Phone: +49.30.31424315 - --- -Copyright 1992 by Jutta Degener and Carsten Bormann, Technische -Universitaet Berlin. See the accompanying file "COPYRIGHT" for -details. THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE. |