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TS 26.177
Speech Enabled Services (SES) –
Distributed Speech Recognition (DSR)
Extended Advanced Front-End Test Sequences

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V16.0.0 (PDF)  2020/06  9 p.
V15.0.0  2018/06  9 p.
V14.0.0  2017/03  9 p.
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V9.0.0  2009/12  9 p.
V8.0.0  2008/12  9 p.
V7.0.0  2007/06  9 p.
V6.0.0  2005/01  9 p.
Rapporteur:
Mr. Pearce, David

Content for  TS 26.177  Word version:  16.0.0

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1  ScopeWord‑p. 5
The present document specifies the digital test sequences for the DSR Extended Advanced Front-end speech codec. These sequences can be used to test for a bit exact implementation of the DSR Advanced Front-end codec and quantization (TS 26.243).
2  References
The following documents contain provisions, which through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]  TS 26.243   "ANSI-C code for the Fixed-Point Distributed Speech Recognition Extended Advanced Front-end".
[2]  ETSI ES 202 050 (2007-01) V1.1.5: "Speech Processing, Transmission and Quality Aspects (STQ); Distributed speech recognition; Advanced front-end feature extraction algorithm; Compression algorithms DSR advanced front end."
[3]  ETSI ES 202 212 (2005-11) V1.1.2: "Speech Processing, Transmission and Quality Aspects (STQ); Distributed speech recognition; Extended advanced front-end feature extraction algorithm; Compression algorithms; Back-end speech reconstruction algorithm".
[4]  TS 26.074   "AMR speech codec test sequences"
[5]  TS 26.174   "Adaptive Multi-Rate (AMR) Wideband speech codec test sequences"
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3  Abbreviations
For the purposes of the present document, the following abbreviations apply:
AFE
Advanced Front-end
AMR
Adaptive Multi-Rate
AMR-NB
AMR Narrowband
AMR-WB
AMR Wideband
DSR
Distributed Speech Recognition
ETSI
European Telecommunications Standards Institute
GSM
Global System for Mobile communications
SES
Speech Enabled Services
VAD
Voice Activity Detector
X-AFE
eXtended Advanced Front-end
4  GeneralWord‑p. 6
Digital test sequences are provided to test for a bit exact implementation of the Distributed Speech Recognition Extended Advanced Front-end (TS 26.243).
The test sequences may also be used to verify installations of the ANSI C code in TS 26.243.
Clause 5 describes the format of the files, which contain the digital test sequences.
5  Test sequence format
This clause provides information on the format of the digital test sequences for the DSR Extended Advanced Front-end (TS 26.243).
5.1  File format
The test sequence files in PC (little-endian) byte order are provided in archive files (ZIP format), which accompany the present document.
Following decompression, three types of file are provided:
  • *.inp - Input to the speech encoder.
  • *.cep - Cepstral output of the encoder, input to the quantizer.
  • *.pitch - Pitch output of the encoder, input to the quantizer.
  • *.class - Class output of the encoder, input to the quantizer.
  • *.vad - VAD output of the encoder, input to the quantizer.
  • *.bs - Output of the quantizer
Two test scripts are provided for exercising the Extended Advanced Front-end and quantizer functions.
All file formats are described in TS 26.243.
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6  DSR test sequences
Forty-three encoder input sequences are provided, 22 with 8kHz sampling, 23 with 16kHz sampling.
  • 8kHz sampling:
    T00.INP - T21.INP as described in the AMR test sequences document TS 26.074.
  • 16kHz sampling:
    T00.INP - T22.INP as described in the AMR WB test sequences document TS 26.174.
$  Change historyWord‑p. 7

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