STEREOSCOPIC SOUND IMAGE PICKUP AND REPRODUCING DEVICE, TRANSMISSION METHOD FOR STEREOSCOPIC SOUND IMAGE AND REPRODUCING DEVICE, AND RECORDING METHOD FOR STEREOSCOPIC SOUND INFORMATION AND REPRODUCING DEVICE

摘要

PURPOSE:To reproduce a sound field very close to an original sound field by using a sufficient number of microphone groups so as to constitute the pickup devices of a stereoscopic sound image and using a sufficient number of speaker groups so as to constitute a reproducing device of the stereoscopic sound image. CONSTITUTION:Microphones 2' of each microphone group 2 in a figure illustrating pickup devices and reproducing devices for stereoscopic sound image are arranged at an interval in which a phase difference corresponding to a half of a wavelength of a maximum spatial frequency component of a sound wave being an object of pickup or below is detected. The sound picked up by the microphones 2, of the microphone group 2 is amplified by each amplifier 3' of an amplifier group 3 comprising n-set of amplifiers, connected to each power amplifier 4, of a power amplifier group 4 comprising n-set of power amplifiers and reproduced by each speaker 6, of a speaker group 5 comprising n-set of speakers. Moreover, the sound sounded from the speaker group 5 is very similar to the sound sounded directly from the original sound source including in the direction of the sound source 1', and a listener seated in front of the speaker group 6 can listen to the sound as if it were seated in front of the original sound source. That is, the original stereoscopic sound image is picked up by the microphone group 2 and the original stereoscopic sound image is reproduced from the speaker group 5.