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Table 1 Experimental conditions

From: Nonlinear speech enhancement by virtual increase of channels and maximum SNR beamformer

Number of real microphones 2
Number of virtual microphones N v 0–9
Real microphone interval 4 cm
Input SIR 0 dB
Reverberation time 640 ms
Sampling rate 8 kHz
FFT frame length 1024 samples
FFT frame shift 256 samples
Speech-enhanced period length 20 s
Target-active period length |θ T| 10 s
Target-inactive period length |θ I| 10 s