Linear optimal source distribution mapping for binaural sound reproduction

Publication Type:
Conference Proceeding
Citation:
INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, 2014
Issue Date:
2014-01-01
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Binaural playback over loudspeakers usually leads to crosstalk. The most effective strategy of general crosstalk cancellation systems is system inversion which, nevertheless, gives rise to several problems such as the loss of dynamic range and the lack of robustness. The optimal source distribution (OSD) method has been utilized to compromise the playback performance and the problems of the crosstalk cancellation; however, the method was based on the circular loudspeaker array and is hard to be implemented in some practical applications. The other problem associated with the method is that the frequency-span discretization only concentrates on the dynamic range loss. This paper proposes a novel mapping method by adjusting the circular loudspeaker array to the linear array, where the optimization of the discretization is discussed by taking full consideration of the crosstalk cancellation performance and the frequency response at the sweet spot. Both simulations and experiments demonstrate the efficacy of the proposed method. The proposed system has potential applications in both sound field manipulation and subjective noise evaluation.
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