Speech Enhancement Control Design Algorithm for Dual-Microphone Systems Using β-NMF in a Complex Environment

Figure 7

The spectrogram of (a) the clean speech signal, (b) the noisy signal obtained via the delay-and-sum, (c) the noisy speech enhanced by the coherence-based method, (d) the noisy speech enhanced by the standard NMF, (e) the noisy speech enhanced by the proposed method (), and (f) the noisy speech enhanced by the proposed method ().

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