发明授权
- 专利标题: Acoustic playback system
- 专利标题(中): 声学播放系统
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申请号: US14722780申请日: 2015-05-27
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公开(公告)号: US09544691B2公开(公告)日: 2017-01-10
- 发明人: Akira Yasuda , Jun-ichi Okamura
- 申请人: Trigence Semiconductor, Inc.
- 申请人地址: JP Tokyo
- 专利权人: Trigence Semiconductor, Inc.
- 当前专利权人: Trigence Semiconductor, Inc.
- 当前专利权人地址: JP Tokyo
- 代理机构: Typha IP LLC
- 优先权: JP2009-284968 20091216
- 主分类号: G06F17/00
- IPC分类号: G06F17/00 ; H04R3/14 ; G06F17/30 ; H04R3/12
摘要:
An acoustic playback system including a digital filter; and a plurality of digital modulators each of which output a digital signal to one of a plurality of speakers driven by digital signals having different play back bandwidths; wherein the digital filter converts a digital audio signal which is input into a plurality of digital audio signals of a plurality of frequency bandwidths corresponding to play back bandwidths of the speakers, and outputs each of the digital audio signals of the plurality of frequency bandwidths to one of the plurality of digital modulators; each of the digital modulators outputs the modulated digital signal to the speaker of a play back bandwidth corresponding to a frequency bandwidth of the digital audio signal which is input by performing miss-match shaping after noise shaping to a digital audio signal; and each number of bits of a digital signal of the digital modulators is different.
公开/授权文献
- US20150310024A1 ACOUSTIC PLAYBACK SYSTEM 公开/授权日:2015-10-29
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