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A New Approach to Detecting Auditory Onsets within a Binaural Stream

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A number of problems have recently come to light whilst attempting to perform perceptually relevant computational analysis of binaural recordings made within enclosed spaces. In particular, it is not possible to extract reliable information for auditory source width or listener envelopment without accounting for the time-domain properties of the stimulus. A new method for performing computational spatial analysis entails computing the running interaural cross-correlation of the binaural signal whilst employing an adaptive filter to perform basic dereverberation, hence gaining an amplitude characteristic of the source stream. Early experimental results indicate that this new technique yields an indication of auditory spatial attributes which is more reliable than that attainable previously.

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