Fig. 4From: Front-end technologies for robust ASR in reverberant environments—spectral enhancement-based dereverberation and auditory modulation filterbank featuresThe time domain filter coefficients (upper panel) and frequency domain normalized gain functions (lower panel) of the AMFB filters with real and imaginary parts; center temporal modulation frequencies are 0, 5, 10, 16.67, and 27.78 HzBack to article page