An investigation on the transition from early reflections to a reverberation tail in a BRIR

Reflections in a binaural room impulse response (BRIR) can be classified into 2 groups: the early reflections and a reverberation tail. The aim of this work is to determine at which time a transition from early reflections to late reverberation can be said to occur. In the literature several suggestions exists for the determination of a such transition time, based on objective room parameters. How-ever, these lead to different values, and none may relate gener-ally to a perceptually justified transition time. In this investigation BRIRs are measured in a room with a listener and a loudspeaker in different positions. The BRIRs are subsequently cut at 20, 60, 10 and 140 ms and different ”heads ” and ”tails ” are combined. The modified BRIRs are compared with the original BRIRs in a 3AFC experiment to reveal the audibility of any possible position spe-cific information in the tails. Only preliminary results from a pilot experiment exists at the time of writing. 1