Source Localisation Mapping using Weighted Interaural Cross-Correlation
نویسندگان
چکیده
Computational sound localisation using binaural microphones requires accurate Interaural Time Difference (ITD) estimation in order to infer an angle of incidence. The Phase Transform weighting function, used in generalized cross correlation calculations for microphone arrays is investigated here for application to ITD estimation in binaural head recordings. Empirical measurements using the method allow for the derivation of a theoretical ITD to angle of incidence mapping function for use with binaural microphones. The corresponding results for estimation of ITDs in a reverberant environment are presented. These results are pertinent to an entire audience area, and not just a single listener position. This objective analysis is then confirmed by the results of real audience listening tests.
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