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:
Jun. 22, 2004
Filed:
Aug. 24, 1999
Bruce C. H. Cheng, Taipei, TW;
Delta Electronics, Inc., Taipei, TW;
Abstract
The present invention discloses an acoustic voice cancellation system for generating a non-interference zone. The acoustic system includes an input transducer for receiving an acoustic input signal from a speaker to a signal processor. The acoustic system further includes a subsystem for providing a non-interfering environment The subsystem for providing non-interfering environment generates an acoustic cancellation signal for destructively interfering with the acoustic input signal at a distance away from the speaker. In a preferred embodiment, the subsystem for providing a non-interfering environment further includes an acoustic attenuation means for generating a cancellation acoustic signal for destructively interfering with the acoustic input signal. In another preferred embodiment, the subsystem for providing a non-interfering environment further includes a signal transmission means for transmitting the cancellation acoustic signal to the distance away from the speaker. In another preferred embodiment, the signal transmission means is provided for transmitting the cancellation acoustic signal with a speed higher than an air sonic speed. In another preferred embodiment, the acoustic system further includes an output transducer for outputting the cancellation acoustic signal.