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. 08, 1999
Filed:
Oct. 30, 1996
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
An audio signal is compressed and decompressed. The audio signal is sampled per regular sampling interval to obtain sampled values. The sampled values are orthogonal-transformed per constant period to obtain sequential orthogonal transfer functions. Feature points are extracted that represent change in coefficient intensity of the orthogonal transfer functions per constant frequency interval. Coefficient intensity data, frequency data, and time data of the feature points are obtained. The orthogonal transfer functions are reproduced by interpolating the coefficient intensity of the orthogonal transfer functions on the basis of the coefficient intensity data, frequency data, and time data. The reproduced orthogonal transfer functions are inverse orthogonal-transformed to reproduce the sampled values. And, the reproduced sampled values are converted into the audio signal.