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Table 6 The partial contribution of LP filtering and spectral valleys (SV) on LVCSR task, WER [%]

From: Advanced acoustic modelling techniques in MP3 speech recognition

  Bit-rate 128k 32k 28k 24k 20k 16k 12k
  f cut 7200 Hz 5800 Hz 5600 Hz
PLP SV 14.16 14.28 14.45 14.22 14.43 14.96 16.68
  Low-pass 14.22 14.34 14.54
MFCC SV 14.35 14.91 14.89 14.94 15.56 16.18 19.7
  Low-pass 14.15 14.45 14.86