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:
Jan. 24, 2012
Filed:
Feb. 21, 2008
Applicants:
Ming-sian R. Bai, HsinChu, TW;
Huan-sheng Zhang, Taoyuan, TW;
Rong-liang Chen, Pingtung County, TW;
Inventors:
Assignee:
National Chiao Tung University, Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system for producing parameters for a bass-enhanced loudspeaker enclosure; meanwhile, a low-frequency extended frequency, a quality and quantity ratio and radius of a port need to be defined for the system. Also, the resonance frequency of a mechanical system and the quality and quantity of a mechanical system are fixed to obtain the parameters for the frequency ratio, the length of the duct and the cavity volume inside the device, etc. and to manufacture the bass-enhanced loudspeaker enclosure.