| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively obtain a surround sound field by collecting sounds more than the channel of reproduction channels in all the circumferential directions at 360° and intensively performing edition in accordance with a sound field status or video on photographing when generating a multi-channel signal for surround during sound collection. <P>SOLUTION: An acoustic collecting apparatus includes input means 30-33 for inputting a plurality of acoustic signals; an acoustic directivity generating means 40 for generating a plurality of acoustic directional signal from the acoustic signals in all the circumferential directions; a scanning means 41 for scanning the acoustic directional signals in the order of directivity directions and outputting them; and a vector synthesis means 42 for synthesizing a prescribed direction by selecting single or multiple prescribed direction signals from the scanning means 41, wherein the output of the vector synthesis means is defined as a plurality of acoustic output channels. <P>COPYRIGHT: (C)2008,JPO&INPIT |
