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. 16, 2011
Filed:
Oct. 16, 2007
Masaru Shimura, Kanagawa, JP;
Taro Nakagami, Kanagawa, JP;
Kazunobu Ohkuri, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An audio signal processing apparatus includes a high-pass filter for extracting from an audio signal a frequency component higher than f, n band-pass filters for extracting, from the audio signal, frequency components falling within a frequency range from f/N to f/N, n harmonic overtone generators for frequency multiplying each of outputs of the n band-pass filters by N, a first combining unit for combining the generated harmonic overtone components, a level detector for detecting a level of a supplied harmonic overtone component, a gain controller for controlling dynamically the harmonic overtone component supplied from the first combining unit, and a second combining unit for combining the frequency component extracted by the high-pass filter and a harmonic overtone component output from the gain controller, where N is (n being a natural number), fis a first predetermined frequency, and fis a second predetermined frequency higher than f