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. Author manuscript; available in PMC: 2011 Dec 27.
Published in final edited form as: IEEE Trans Audio Speech Lang Process. 2011 Jul 18;20(2):599–609. doi: 10.1109/TASL.2011.2162406

Fig. 9.

Fig. 9

Spectrograms of the clean speech signal (top left) and noisy signal (top right) captured by the front OMNI microphone. Speech is degraded by speech-weighted noise (SNR=0 dB) located at 90° azimuth. Bottom left panel shows enhanced signal by the beamformer and bottom right panel shows enhanced signal by the proposed coherence-based algorithm. The IEEE sentence was “To reach the end he needs much courage” uttered by a male speaker.