Variational Bayes Estimation Approach to Multi-microphone Speech Dereverberation

STFT coefficients of are modeled as Gaussian random variables with time-dependent variance. The variance, being a positive quantity is modeled as a Gamma distributed random variable.

Speech Examples

Two microphone scenario

MCLP Order: 16

Male speech

Female speech

Clean speech:

Reference Microphone signal:

Enhanced signal:

WPE:	CGG:
VBE:

Clean speech:

Reference Microphone signal:

Enhanced signal:

WPE:	CGG:
VBE:

Four microphone scenario

MCLP Order: 16

Male speech

Female speech

Clean speech:

Reference Microphone signal:

Enhanced signal:

WPE:	CGG:
VBE:

Clean speech:

Reference Microphone signal:

Enhanced signal:

WPE:	CGG:
VBE:

Eight microphone scenario

MCLP Order: 8

Male speech

Female speech

Clean speech:

Reference Microphone signal:

Enhanced signal:

WPE:	CGG:
VBE:

Clean speech:

Reference Microphone signal:

Enhanced signal:

WPE:	CGG:
VBE: