The effect of loudness on the reverberance of music: Reverberance prediction using loudness models

Publisher:
Acoustical Society of America
Publication Type:
Journal Article
Citation:
Journal of the Acoustical Society of America, 2012, 131 (2), pp. 1194 - 1205
Issue Date:
2012
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This study examines the auditory attribute that describes the perceived amount of reverberation, known as “reverberance.” Listening experiments were performed using two signals commonly heard in auditoria: excerpts of orchestral music and western classical singing. Listeners adjusted the decay rate of room impulse responses prior to convolution with these signals, so as to match the reverber- ance of each stimulus to that of a reference stimulus. The analysis examines the hypothesis that reverberance is related to the loudness decay rate of the underlying room impulse response. This hy- pothesis is tested using computational models of time varying or dynamic loudness, from which pa- rameters analogous to conventional reverberation parameters (early decay time and reverberation time) are derived. The results show that listening level significantly affects reverberance, and that the loudness-based parameters outperform related conventional parameters. Results support the pro- posed relationship between reverberance and the computationally predicted loudness decay function of sound in rooms.
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