Acoustic space reproduction method, sound recording device, and sound recording medium

Abstract

A system for reproducing a sound field simulating a real acousting space includes a sound collecting device, a sound recording device and a sound reproducing device. The sound collecting device includes first and second collection systems, the first collection system having non-directional microphones at respective corners of a cube defining a hypothetical three-dimensional space in the real acoustic space and the second collection system having directional microphones of the same number as the non-directional microphones concentrically within the three-dimensional space with directivity of each of the directional microphones being set in the direction of one of the non-directional microphones with which the directional microphone constitutes a pair. Collected sounds by the first and second collection systems of the sound collection device are mixed with each other and recorded on a recording medium by the sound recording device, and further provided on the sound reproducing device. The sound reproducing device has plural loudspeakers of the same number as the non-directional microphones in positions corresponding to the non-directional microphones in the three-dimensional space, and reproduces the collected sounds from the loudspeakers.