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. 25, 2020
Filed:
Aug. 27, 2015
Applicant:
Nanyang Technological University, Singapore, SG;
Inventors:
Assignee:
Nanyang Technological University, Singapore, SG;
Primary Examiner:
Int. Cl.
CPC ...
H04R 3/14 (2006.01); H04R 5/04 (2006.01); H03F 3/217 (2006.01); H03F 3/183 (2006.01); H03F 3/21 (2006.01); H04R 1/40 (2006.01); H04R 3/04 (2006.01);
U.S. Cl.
CPC ...
H04R 3/14 (2013.01); H03F 3/183 (2013.01); H03F 3/211 (2013.01); H03F 3/2173 (2013.01); H03F 3/2178 (2013.01); H04R 1/403 (2013.01); H04R 3/04 (2013.01); H04R 5/04 (2013.01); H03F 2203/21112 (2013.01); H04R 2217/03 (2013.01);
Abstract
An amplifier circuit for a parametric transducer, comprising: a signal processor for processing an input signal into first and second signals; and at least a pair of output stages arranged to respectively receive the first and second signals for generating amplified first and second signals respectively, which are provided to operate the parametric transducer. The input, first and second signals are arranged with a substantially similar frequency to cause a switching frequency of the amplifier circuit to be matched to a carrier frequency of the parametric transducer. A related audio device is also disclosed.