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The Time When the Reverberation Tail in a Binaural Room Impulse Response Begins

This study aims to investigate, whether the reverberation tails of binaural room impulse responses (BRIRs) for different locations and directions in a given room can be arbitrarily interchanged in e.g. virtual environment generation. BRIRs were measured in a quardratic lecture room and postprocessed to minimize any possible noise and concatenation artifacts. Four subsets of combinations of BRIR heads and tails were selected to test for dependence of location and head direction. A 3 AFC test has been carried out with-so far-4 listeners, and the results suggest that-for the room in question-the BRIRs may be cut around 40-60 ms and arbitrarily combined with no or little perceptual consequence.

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