From: Autocorrelation-based noise subtraction method with smoothing, overestimation, energy, and cepstral mean and variance normalization for noisy speech recognition
Method
Average of spectrum error
20Â dB
15Â dB
10Â dB
5Â dB
0Â dB
−5 dB
SS
332
378
488
653
982
1500
ANS
22.4
28.1
39.3
55.9
87.9
142