发明授权
- 专利标题: Picked-up-sound recording method and apparatus
- 专利标题(中): 拾音录音方法及装置
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申请号: US10025179申请日: 2001-12-19
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公开(公告)号: US07130428B2公开(公告)日: 2006-10-31
- 发明人: Toru Hirai , Fukushi Kawakami , Yasushi Shimizu , Yoshikazu Honji , Masahiro Ikeda , Mikio Tohyama
- 申请人: Toru Hirai , Fukushi Kawakami , Yasushi Shimizu , Yoshikazu Honji , Masahiro Ikeda , Mikio Tohyama
- 申请人地址: JP Hamamatsu
- 专利权人: Yamaha Corporation
- 当前专利权人: Yamaha Corporation
- 当前专利权人地址: JP Hamamatsu
- 代理机构: Pillsbury Winthrop Shaw Pittman LLP
- 优先权: JP2000-390381 20001222
- 主分类号: H04B3/20
- IPC分类号: H04B3/20
摘要:
Sound picked up by a microphone of a first sound field is reproduced by a speaker of a second sound field, and a sound picked up by a microphone of the second sound field is reproduced by the speaker of the first sound field. Sound pressure detection section detects a sound pressure of a sound present in the second (or first) sound field picked up by the microphone of the second (or first) sound field, other than a sound reproduced by the speaker of the first (or second) sound field. Other sound pressure detection section detects a sound pressure with which the sound picked up by the microphone of the second (or first) sound field and reproduced by the speaker of the first (or second) sound field is picked up by the microphone of the first (or second) sound field. Sound-pressure-difference detection section adjusts a gain of an automatic gain adjustment section in such a manner that the two detected sound pressures assume a predetermined relationship. Thus, any sound picked up in one of the first and second sound fields can be reproduced in the other sound field with an enhanced sense of unity and connection between the two sound fields.
公开/授权文献
- US20020159603A1 Picked-up-sound reproducing method and apparatus 公开/授权日:2002-10-31