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:
Aug. 30, 2011
Filed:
Aug. 22, 2008
Chih-kung Lee, Taipei, TW;
Wen-ching Ko, Kaohsiung, TW;
Ji-de Huang, Taipei, TW;
Jia-lun Chen, Tainan, TW;
Ing-yih Leu, Da-an District, TW;
Wen-hsin Hsiao, Longtan Township, TW;
Chih-chiang Cheng, Changhua, TW;
Jen-hsuan Ho, Taipei, TW;
Wen-jong Wu, Taipei, TW;
Chih-Kung Lee, Taipei, TW;
Wen-Ching Ko, Kaohsiung, TW;
Ji-De Huang, Taipei, TW;
Jia-Lun Chen, Tainan, TW;
Ing-Yih Leu, Da-an District, TW;
Wen-Hsin Hsiao, Longtan Township, TW;
Chih-Chiang Cheng, Changhua, TW;
Jen-Hsuan Ho, Taipei, TW;
Wen-Jong Wu, Taipei, TW;
National Taiwan University, , TW;
Abstract
A speaker system that includes an audio signal-receiving interface, a modulating circuit, a phase-control circuit, and a number of speaker units. The audio signal-receiving interface is configured to receive an audio signal, and the modulating circuit is coupled with the audio signal-receiving interface. The modulating circuit is configured to modulate a low frequency component of the audio signal and to generate a modulated signal. The phase-control circuit is coupled with the modulating circuit and the audio signal-receiving interface. The phase-control circuit is configured to receive the modulated signal and a high-frequency component of the audio signal and to control a phase of the modulated signal, a phase of the high-frequency component of the audio signal, or both. The speaker units are coupled with the phase-control circuit and configured to generate sound waves based on signals supplied by the phase-control circuit.