Title:
音響システム
Document Type and Number:
Japanese Patent JP5748657
Kind Code:
B2
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 configured with 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 plurality of 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 plurality of 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 which is input; and each number of bits of a digital signal which is output by each of the digital modulators is different is provided.
Inventors:
Akira Yasuda
Junichi Okamura
Junichi Okamura
Application Number:
JP2011510758A
Publication Date:
July 15, 2015
Filing Date:
November 02, 2010
Export Citation:
Assignee:
Trigence semiconductor Co., Ltd.
International Classes:
H04R3/14; H03F3/181; H03F3/20; H03F3/68; H04R3/00
Domestic Patent References:
| JP2009147928A | 2009-07-02 | |||
| JPS573498A | 1982-01-08 | |||
| JPH03216025A | 1991-09-24 | |||
| JPH0865791A | 1996-03-08 | |||
| JPH02121497A | 1990-05-09 |
Attorney, Agent or Firm:
Takahashi Hayashi & Partners
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