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Content for  TS 46.054  Word version:  18.0.0

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1…   5… 
5 Test sequence format  6 Speech codec test sequences  7 DTX test sequences  8 Sequences for finding the 20 ms framing of the GSM enhanced full rate speech encoder  9 Trau Testing with 8 Bit A- and μ-law PCM Test Sequences  10 Alternative Enhanced Full Rate implementation using the Adaptive Multi Rate 12.2 kbit/s mode  $ Change History 

 

5  Test sequence format  p. 6

5.1  File format  p. 6

5.2  Codec homing  p. 7

6  Speech codec test sequences  p. 8

6.1  Codec configuration  p. 8

6.2  Speech codec test sequences  p. 8

6.2.1  Speech encoder test sequences  p. 8

6.2.2  Speech decoder test sequences  p. 9

6.2.3  Codec homing sequence  p. 9

7  DTX test sequences  p. 11

7.1  Codec configuration  p. 11

7.2  DTX test sequences  p. 11

7.2.1  Predictor values computation  p. 12

7.2.2  Spectral comparison  p. 12

7.2.3  Threshold adaptation  p. 12

7.2.4  Periodicity detection  p. 12

7.2.5  Tone detection  p. 12

7.2.6  Safety and initialisation  p. 12

7.2.7  Comfort noise test sequence  p. 12

7.2.8  Real speech and tones  p. 12

8  Sequences for finding the 20 ms framing of the GSM enhanced full rate speech encoder  p. 13

8.1  Bit synchronisation  p. 13

8.2  Frame synchronisation  p. 14

8.3  Formats and sizes of the synchronisation sequences  p. 14

9  Trau Testing with 8 Bit A- and μ-law PCM Test Sequences  p. 15

10  Alternative Enhanced Full Rate implementation using the Adaptive Multi Rate 12.2 kbit/s mode  p. 17

$  Change History  p. 19

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