title: Blind single-channel suppression of late reverberation based on perceptual reverberation modeling.
abstract: A blind method for suppressing late reverberation from speech and audio signals is presented. The proposed technique operates both on the spectral and on the sub-band domains employing a single input channel. At first, a preliminary rough clean signal estimation is required and for this, any standard technique may be applied; however here the estimate is obtained through spectral subtraction. Then, an auditory masking model is employed in sub-bands to extract the reverberation masking index (RMI) which identifies signal regions with perceived alterations due to late reverberation. Utilizing a selective signal processing technique only these regions are suppressed through sub-band temporal envelope filtering based on analytical expressions. Objective and subjective measures indicate that the proposed method achieves significant late reverberation suppression for both speech and music signals over a wide range of reverberation time (RT) scenarios.
authors.affiliation: Audio and Acoustic Technology Group, Wire Communications Laboratory, Department of Electrical and Computer Engineering, University of Patras, Patras, Achaia 26500, Greece. altsilfidis@upatras.gr
authors.forename: Alexandros
authors.initials: A
authors.lastname: Tsilfidis
authors.forename: John
authors.initials: J
authors.lastname: Mourjopoulos
mesh_terms: D000161:Acoustic Stimulation; D000162:Acoustics; D000465:Algorithms; D000704:Analysis of Variance; D001299:Audiometry; D001307:Auditory Perception; D005260:Female; D006801:Humans; D008297:Male; D008962:Models, Theoretical; D009146:Music; D017603:Signal Detection, Psychological; D012815:Signal Processing, Computer-Assisted; D013018:Sound Spectrography; D013061:Speech Acoustics; D013067:Speech Perception; D013997:Time Factors; D014732:Vibration