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Extension of the Optimal Source Distribution for Binaural Sound Reproduction

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Binaural reproduction over loudspeaker requires system inversion which is often referred to as cross-talk cancellation. Such process is the major factor to degrade the quality of 3D sound reproduction but the Optimal Source Distribution (OSD) provides simple and effective signal processing and loudspeaker design principle which enables lossless crosstalk cancellation process. The OSD takes advantage of its physical property which ensures that in-phase and out-of-phase components of the binaural reproduction process are balanced. Hence the bulk of the crosstalk cancellation is achieved by its loudspeaker design principle and the related natural interference in the sound field. Inverse filters of the OSD have a unique property where only the simple phase change is required in essence for the perfect crosstalk cancellation. Therefore, each filter has flat frequency response that lead to advantages in many respects. It is shown here that the advantage of the OSD is further enhanced by separating in-phase and out-of-phase components through an alternative system design.
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Document Type: Research Article

Publication date: November 1, 2008

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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