A noise PSD and cross-PSD estimation for two-microphone speech enhancement systems

In this paper, we propose an efficient noise power and noise cross-power spectral density estimation method for distributed microphones. The proposal can be combined with coherence based two-microphone noise reduction systems. It utilizes a minimum statistic based noise PSD estimator for each channel and a joint voice activity detector. Evaluation results show that the voice activity detection significantly improves the individual estimates.