Binaural binaural room impulse responses convolved with anechoic recordings are commonly used in auditorium acoustics design and research.Binaural and stereophonic(ORTF) room impulse responses, which had been recorded in 5 concert auditoria, were used in this study to test the spatial audio quality of four reproduction systems: conventional stereophony, binaural headphones, stereo dipole, and double stereo dipole. Anechoic music, convolved with the impulse responses, was reproduced over these systems. The systems were matched as closely as possible to each other, and to the sound levels that would occur in the auditoria for the musical source.In a subjective test, subjects rated the room size, sound source distance and realism of the reproduction. Results indicate best spatial reproduction from the stereo dipole systems.
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