ETS 300 580-2 : 20003
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The latest, up-to-date edition.
DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2) - FULL RATE SPEECH - PART 2: TRANSCODING
Hardcopy , PDF
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Foreword
1 General
1.1 Scope
1.2 Outline description
1.3 Functional description of audio parts
1.4 PCM format conversion
1.5 Principles of the RPE-LTP Encoder
1.6 Principles of the RPE-LTP Decoder
1.7 Sequence and subjective importance of encoded
parameters
2 Transmission characteristics
2.1 Performance characteristics of the
analogue/digital interfaces
2.2 Transcoder delay
3 Functional description of the RPE-LTP Codec
3.1 Functional description of the RPE-LTP Encoder
3.2 Decoding
4 Computational details of the RPE-LTP Codec
4.1 Data representation and arithmetic operations
4.2 Fixed point implementation of the RPE-LTP Coder
4.3 Fixed point implementation of the RPE-LTP Decoder
4.4 Tables used in the fixed point implementation of
the RPE-LTP Coder and Decoder
5 Digital test sequences
5.1 Input and output signals
5.2 Configuration for the application of the test
sequences
5.3 Test sequences
Annex 1 (informative): Codec Performance
Annex 2 (informative): Subjective relevance of the
speech coder output bits
Annex 3 (informative): Format for test sequence
distribution
Annex 4 (informative): Test sequence diskette
Annex 5 (informative): Change Request History
History
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