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Table 3 The log spectral distortion for various bit rates (variable rate coding scheme). For the 5 kbps case, the actual number of bits/frame used for each band can be found on Table 4.

From: Multiresolution Source/Filter Model for Low Bitrate Coding of Spot Microphone Signals

Bits/frame kbps LSD(dB) 2–4 dB (%) 4 dB (%)
Var 5 1.2599 16.13 0.0998
Var 10 0.6380 3.87 0.0000
22 15 0.7583 0.35 0.0186
29 20 0.4108 0.06 0.0046
36 25 0.2190 0.01 0.0000
44 30 0.1094 0.00 0.0000
51 35 0.0592 0.00 0.0000
58 40 0.0329 0.00 0.0000