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:
Nov. 18, 2014
Filed:
Mar. 08, 2011
Shiro Suzuki, Kanagawa, JP;
Yuuki Matsumura, Saitama, JP;
Yasuhiro Toguri, Kanagawa, JP;
Yuuji Maeda, Tokyo, JP;
Shiro Suzuki, Kanagawa, JP;
Yuuki Matsumura, Saitama, JP;
Yasuhiro Toguri, Kanagawa, JP;
Yuuji Maeda, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention relates to an encoding device and an encoding method, a decoding device and a decoding method, and a program that reduce deterioration of sound quality due to encoding of audio signals. An envelope emphasis part () emphasizes an envelope (ENV). A noise shaping part () divides an emphasized envelope (D) formed by emphasis of the envelope (ENV) by a value larger than 1, and subtracts noise shaping (G) specified by information (NS) from a result of the division. A quantization part () sets a result of the subtraction as a quantization bit count (WL), and quantizes a normalized spectrum (S) formed by normalization of a spectrum (S) based on the quantization bit count (WL). A multiplexing part () multiplexes the information (NS), a quantized spectrum (QS) formed by quantization of the normalized spectrum (S), and the envelope (ENV). The present invention can be applied to an encoding device encoding audio signals, for example.