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Content for  TS 26.073  Word version:  16.0.0

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The present document contains an electronic copy of the ANSI C code for the Adaptive Multi-Rate codec. The ANSI C code is necessary for a bit exact implementation of the Adaptive Multi Rate speech transcoder (TS 26.090), Voice Activity Detection (TS 26.094), comfort noise (TS 26.092), source controlled rate operation (TS 26.093) and example solutions for substituting and muting of lost frames (TS 26.091).
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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.
[1]  TS 26.074   "AMR Speech Codec; Test sequences".
[2]  TS 26.090   "AMR Speech Codec; Speech transcoding".
[3]  TS 26.091   "AMR Speech Codec; Substitution and muting of lost frames".
[4]  TS 26.092   "AMR Speech Codec; Comfort noise aspects".
[5]  TS 26.093   "AMR Speech Codec; Source controlled rate operation".
[6]  TS 26.094   "AMR Speech Codec; Voice Activity Detection".
[7]  RFC 3267:   "A Real-Time Transport Protocol (RTP) Payload Format and File Storage Format for Adaptive Multi-Rate (AMR) and Adaptive Multi-Rate Wideband (AMR-WB) Audio Codecs", June 2002.
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3  Definitions and abbreviations
3.1  Definitions
Definition of terms used in the present document, can be found in TS 26.090, TS 26.091, TS 26.092, TS 26.093 and TS 26.094.
3.2  Abbreviations
For the purpose of the present document, the following abbreviations apply:
ANSI
American National Standards Institute
ETS
European Telecommunication Standard
GSM
Global System for Mobile communications
I/O
Input/Output
RAM
Random Access Memory
ROM
Read Only Memory

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