Modeling perceptual effects of reverberation on stereophonic sound reproduction in rooms.
The proposed model derives time-frequency maps to estimate perceived alterations due to reverberation in stereo audio signals reproduced in rooms. These alterations relate to monaural masking due to reverberant decay, derived via a computational auditory masking model and to inter-channel cues for the formation of the spatial position of the aural objects, derived via an inter-channel cue mapping module. The maps illustrate in detail the varying nature of the perceptually-relevant alterations due to room reverberation. Quantitative metrics are also introduced which were found to be proportional to reverberation interference, to room-reverberation time and to depend on the specific audio signal. A statistical approach classifies room response properties via their histogram distributions. Corresponding distributions were also applied to the proposed signal-dependent perceptual maps. Such distributions were found to be useful for interpreting the perceived alterations with different kinds of signals, such as music or speech.
Zarouchas
Thomas
T
Department of Electrical Engineering and Computer Engineering, University of Patras, Achaia 26500, Greece. thozar@wcl.ee.upatras.gr
Mourjopoulos
John
J
D000162:Acoustics; D000465:Algorithms; D001108:Architecture; D001307:Auditory Perception; D003198:Computer Simulation; D004423:Ear; D004777:Environment; D006801:Humans; D008962:Models, Theoretical; D013997:Time Factors