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:
Jul. 16, 2013
Filed:
Aug. 03, 2009
Yutaka Yamamoto, Kyoto, JP;
Masaaki Nagahara, Kyoto, JP;
Yutaka Yamamoto, Kyoto, JP;
Masaaki Nagahara, Kyoto, JP;
Kyoto University, Kyoto, JP;
Abstract
A hearing aid tailored to a hard-of-hearing person is designed using sampled-data control theory. The method is for designing an audio signal processing system for a hearing aid, wherein the system comprises an AD converter for converting an analog audio input signal (y) inputted to the hearing aid into a digital audio input signal, a hearing aid digital filter (K(z)) for performing a signal processing on the digital audio input signal outputted from the AD converter, and a DA converter for converting a digital signal outputted from the hearing aid digital filter into an analog audio output signal to be outputted to the hard-of-hearing person. The hearing aid digital filter (K(z)) is designed according to sampled-data control theory so as to reduce an error (e) occurring between: a restored analog signal (z) obtained from filtering the analog audio output signal outputted from the DA converter through an analog filter (P(s)) that has characteristics corresponding to auditory characteristics of the hard-of-hearing person; and the analog audio signal (y) inputted to the hearing aid.