Subband DCT and EMD Based Hybrid Soft Thresholding for Speech Enhancement
Figure 8
The spectrogram of (a) clean speech, (b) noisy mixture at 10 dB (pink noise), and enhanced speech with (c) wavelet packets thresholding [3], (d) DCT hard thresholding [11], (e) DCT soft thresholding, and (f) proposed based hybrid method ().
