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Content for  TS 26.445  Word version:  16.1.1

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5  Functional description of the encoderWord‑p. 25

5.1  Common processing

5.1.1  High-pass Filtering

5.1.2  Complex low-delay filter bank analysis

5.1.3  Sample rate conversion to 12.8 kHzWord‑p. 27

5.1.4  Pre-emphasis

5.1.5  Spectral analysisWord‑p. 30

5.1.6  Bandwidth detectionWord‑p. 32

5.1.7  Bandwidth decisionWord‑p. 34

5.1.8  Time-domain transient detectionWord‑p. 37

5.1.9  Linear prediction analysisWord‑p. 38

5.1.10  Open-loop pitch analysisWord‑p. 43

5.1.11  Background noise energy estimationWord‑p. 52

5.1.12  Signal activity detectionWord‑p. 68

5.1.13  Coding mode determinationWord‑p. 90

5.1.13.1  Unvoiced signal classificationWord‑p. 91

5.1.13.2  Stable voiced signal classificationWord‑p. 96

5.1.13.3  Signal classification for FEC

5.1.13.4  Transient signal classificationWord‑p. 99

5.1.13.5  Modification of coding mode in special casesWord‑p. 100

5.1.13.6  Speech/music classificationWord‑p. 101

5.1.14  Coder technology selection


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