Document Type and Number:
Japanese Patent JPS5215201
Kind Code:
B2
Abstract:
Systems for producing a sound field in a region surrounding a listener wherein three information channels are utilized for conveying a first signal representative of total sound pressure (A) at a point in space, and two additional signals, A cos theta and A sin theta , for describing the directional characteristics of the sound field. An array of microphones having, for example, equal cardioidal response characteristics are arranged in the original sound field for detecting sound information. Linear, additive signal combining networks are coupled to the microphones for producing the three signals. A plurality of loudspeakers (e.g., four) are coupled to the three information channels by additional linear signal combining networks for reproduction of the sound field. Systems for synthesizing the three signals by electronic devices are also described.
Application Number:
JP5104173A
Publication Date:
April 27, 1977
Filing Date:
May 08, 1973
Export Citation:
International Classes:
H04S3/02; (IPC1-7): H04R5/00; H04H5/00