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.:
Date of Patent:
Oct. 06, 2015
Filed:
Aug. 26, 2013
Applicants:
Yu-bin Zha, Shenzhen, CN;
Xiong Zhang, Shenzhen, CN;
Inventors:
Yu-Bin Zha, Shenzhen, CN;
Xiong Zhang, Shenzhen, CN;
Assignees:
AAC Microtech (changzhou) Co., Ltd., Changzhou, CN;
AAC Acoustic Technologies (shenzhen) Co., Ltd., Shenzhen, CN;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/28 (2006.01); H04R 1/02 (2006.01); H04R 1/30 (2006.01);
U.S. Cl.
CPC ...
H04R 1/021 (2013.01); H04R 1/2803 (2013.01); H04R 1/2811 (2013.01); H04R 1/30 (2013.01); H04R 2499/11 (2013.01);
Abstract
One embodiment of the invention discloses an acoustic device having a housing and a speaker unit accommodated in the housing. The speaker unit forms a front volume and a back volume together with the housing. The housing includes an extra volume communicating with the back volume and a sound channel communicated with the front volume. The extra volume is isolated from the sound channel. The invention provides an acoustic device with enlarged back volume for improving low frequency sound quality.