Evaluation of a perceptually optimized room-in-room reproduction method for playback room compensation

Invited paper

Julian Grosse

Carl v. Ossietzky University Oldenburg

Wednesday 3 june, 2015, 08:40 - 09:00

0.9 Athens (118)

In sound reproduction it is usually desired to reproduce a sound source as accurate as possible to achieve a natural and realistic sound representation of the sound source. A perceptually motivated sound reproduction approach was suggested by [Grosse, van de Par, EUSIPCO, 2014] where only the perceptually most relevant cues of a sound field in the recording room are considered. The monaural and binaural cues are the coloration of the sound source, the interaural cross correlation, which is linked to the listener envelopment, and the reverberation time. Based on this the direct and reverberant sound are rendered over spatially distributed loudspeakers in the playback room while optimizing the direct and reverberant sound field such that the considered cues of the recording room coincide with the reproduced cues in the playback room. A MUSHRA-test showed reasonable results (listening room compensation, sweet-spot robustness) compared to a simple room-in-room or multichannel reproduction in terms of the overall sound quality. This follow up study considers some important perceptual aspects and problems which will occur when a sound source is rendered in a playback room. A subjective listening test is presented where the focus is on perceptual attributes like the perceived timbre, realism and authenticity of various alternative approaches to sound reproduction compared to the perceptually optimized room-in-room reproduction.

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