logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9942682 B1

PDFFull Text
Date of Patent:
Apr. 10, 2018

Filed:

Dec. 02, 2014

Implementation method and device of multi-bit modulation-based digital speaker system

Applicant:

Suzhou Sonavox Electronics Co., Ltd, Jiangsu, CN;

Inventors:

Dengyong Ma, Suzhou, CN;

Jun Yang, Suzhou, CN;

Jianming Zhou, Suzhou, CN;

Guoqiang Chai, Suzhou, CN;

Yefeng Cai, Suzhou, CN;

Yongsheng Mu, Suzhou, CN;

Assignee:

Other;

Attorneys:

Wayne Edward Ramage

Baker Donelson

Primary Examiner:

Sonia Gay

Int. Cl.
CPC ...
H04S 5/00 (2006.01); G06F 3/16 (2006.01); H03F 3/183 (2006.01); H03F 3/185 (2006.01); H03F 3/21 (2006.01); H03F 3/217 (2006.01); H03F 3/68 (2006.01); H03M 3/04 (2006.01); H03M 3/00 (2006.01); H04R 1/00 (2006.01); H04R 3/04 (2006.01); H04R 5/02 (2006.01); H04R 5/04 (2006.01);
U.S. Cl.
CPC ...
H04S 5/00 (2013.01); G06F 3/16 (2013.01); H03F 3/183 (2013.01); H03F 3/185 (2013.01); H03F 3/21 (2013.01); H03F 3/2175 (2013.01); H03F 3/68 (2013.01); H03M 3/04 (2013.01); H03M 3/338 (2013.01); H03M 3/508 (2013.01); H04R 1/005 (2013.01); H04R 3/04 (2013.01); H04R 5/02 (2013.01); H04R 5/04 (2013.01); H03F 3/217 (2013.01); H03F 2200/03 (2013.01); H03F 2200/331 (2013.01); H03M 3/424 (2013.01); H04R 2201/403 (2013.01);
Abstract

The present invention discloses an implementation method and a device of a multi-bit Δ-Σ modulation-based digital speaker system. The method comprises, 1) digital format converting; 2) oversampling interpolation filtering; 3) multi-bit Δ-Σ modulating; 4) thermometer coding; 5) multi-channel mismatch shaping; 6) coding format converting; 7) multi-channel digital power-amplifying; 8) driving a speaker array or a multiple voice coil speaker to sound. The device comprises: a digital input interface, an oversampling interpolation filter, a multi-bit Δ-Σ modulator, a thermometer coder, a multi-channel mismatch shaper, a coding format converter, a multi-channel digital power-amplifier, and a speaker array or a multiple voice coil speaker; each portion being connected in proper order. The present invention can achieve a high-power output under a low-voltage power supply, save power consumption, implement a single-chip integration of a multi-channel reproducing system, reduce the volume and weight of the system and the implementing cost, and improve the quality of the reproduced sound.

Find Patent Forward Citations

Ma, Dengyong. (2018). Implementation method and device of multi-bit modulation-based digital speaker system (U.S. Patent No. 9942682). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9942682

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…