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:
Dec. 01, 2009
Filed:
Dec. 05, 2007
Minoru Tsuji, Chiba, JP;
Shiro Suzuki, Kanagawa, JP;
Keisuke Toyama, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A sound signal encoder for high efficiency encoding of sound signals from a plurality of channels is provided which includes a to-be-correlated object setter (), to-be-correlated object selector () and a variable-length encoder (). The to-be-correlated object setter () sets, on the basis of left-channel frequency information held in a left-channel frequency information holder () and right-channel frequency information held in a right-channel frequency information holder (), index [i] indicating which ones of sine waves on the left channel are to be correlated with, namely, are to be subtracted from, sine waves on the right channel. The to-be-correlated object selector () selects a default value read from a storage unit () or index [i]-th amplitude information read from a left-channel amplitude information holder () as an object to be subtracted from the i-th amplitude information on the right channel according to the index [i]. The variable-length encoder () makes variable-length encoding of a difference resulted from subtraction of the left-channel amplitude information or default value as the to-be-correlated object from the amplitude information on the right channel.