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:
Apr. 29, 2008
Filed:
Dec. 14, 2001
Minoru Tsuji, Chiba, JP;
Shiro Suzuki, Kanagawa, JP;
Keisuke Toyama, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention relates to an information extraction apparatus capable of analyzing an acoustic signal with accuracy and high efficiency. An amplitude analysis sectiondetermines whether or not an attack or release is contained on the basis of an amplitude value for each small region of an input time-series signal. When it is determined that there is an attack or release, an analysis region setting sectionsets the portion from an attack position to a release position as an analysis region. A frequency analysis sectionanalyzes the input time-series signal by generalized harmonic analysis and outputs extracted waveform information. An extracted waveform synthesis sectionsynthesizes the extracted waveform information and outputs the information to a time-series compensation sectionThe time-series compensation sectioncompensates the signal of the synthesized result with a signal outside the analysis region and outputs an extracted waveform time-series signal to a subtraction unitThe subtraction unitgenerates a residual time-series signal from the input time-series signal and the extracted waveform time-series signal. The present invention can be applied to various audio apparatuses, voice recognition apparatuses, voice synthesis apparatuses, etc., for processing an acoustic signal.