Fast communication: Signal-dependent constraints for perceptually motivated suppression of late reverberation

Authors:
Alexandros Tsilfidis;John Mourjopoulos
Affiliations:
Audio and Acoustic Technology Group, Wire Communications Laboratory, Department of Electrical and Computer Engineering, University of Patras, 26500, Greece;Audio and Acoustic Technology Group, Wire Communications Laboratory, Department of Electrical and Computer Engineering, University of Patras, 26500, Greece
Venue:
Signal Processing
Year:
2010

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Abstract

The suppression of late reverberation by spectral subtraction tends to degrade disproportionally low-level signal regions and signal transients. This work proposes two novel relaxation criteria that can constrain such problems in a signal-dependent fashion. These criteria were found to improve the performance of state-of-the-art late reverberation suppression algorithms when used in conjunction with a perceptually motivated non linear filtering stage. Objective results indicate that the proposed method is robust over a wide range of practical reverberation scenarios.