Invention Grant
- Patent Title: Acoustic playback system
- Patent Title (中): 声学播放系统
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Application No.: US14722780Application Date: 2015-05-27
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Publication No.: US09544691B2Publication Date: 2017-01-10
- Inventor: Akira Yasuda , Jun-ichi Okamura
- Applicant: Trigence Semiconductor, Inc.
- Applicant Address: JP Tokyo
- Assignee: Trigence Semiconductor, Inc.
- Current Assignee: Trigence Semiconductor, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Typha IP LLC
- Priority: JP2009-284968 20091216
- Main IPC: G06F17/00
- IPC: G06F17/00 ; H04R3/14 ; G06F17/30 ; H04R3/12

Abstract:
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.
Public/Granted literature
- US20150310024A1 ACOUSTIC PLAYBACK SYSTEM Public/Granted day:2015-10-29
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