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Table 2 The bit allocation used for embedded quantization at different rates. UV and VUV correspond to unvoiced and mixed voicing codebooks, respectively.

From: Very Low Rate Scalable Speech Coding through Classified Embedded Matrix Quantization

Average bits per segment

No. of bits for

No. of bits for

No. of bits for

No. of bits for

No. of bits for

 

representing

representing

representing

representing

representing

 

LSF1 & LSF2

LSF3 & LSF4

LSF5 & LSF6

LSF7 & LSF8

LSF9 & LSF10

 

VUV

UV

VUV

UV

VUV

UV

VUV

UV

VUV

UV

43

10

8

10

8

10

8

9

7

8

6

42

10

8

10

8

10

8

9

7

7

5

41

10

8

10

8

10

8

8

6

7

5

40

10

8

10

8

9

7

8

6

7

5

39

10

8

9

7

9

7

8

6

7

5

38

9

7

9

7

9

7

8

6

7

5

37

9

7

9

7

9

7

8

6

6

4

36

9

7

9

7

9

7

7

5

6

4

35

9

7

9

7

8

6

7

5

6

4

34

9

7

8

6

8

6

7

5

6

4

33

8

6

8

6

8

6

7

5

6

4

32

8

6

8

6

8

6

7

5

5

3

31

8

6

8

6

8

6

6

4

5

3

30

8

6

8

6

7

5

6

4

5

3

29

8

6

7

5

7

5

6

4

5

3

28

7

5

7

5

7

5

6

4

5

3

27

7

5

7

5

7

5

6

4

4

2