发明名称 |
ENCODING DEVICE AND ENCODING METHOD, DECODING DEVICE AND DECODING METHOD, AND PROGRAM |
摘要 |
<p>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 (51) emphasizes an envelope (ENV). A noise shaping part (52) 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 (14) sets a result of the subtraction as a quantization bit count (WL), and quantizes a normalized spectrum (S1) formed by normalization of a spectrum (S0) based on the quantization bit count (WL). A multiplexing part (53) multiplexes the information (NS), a quantized spectrum (QS) formed by quantization of the normalized spectrum (S1), and the envelope (ENV). The present invention can be applied to an encoding device encoding audio signals, for example.</p> |
申请公布号 |
EP2525356(A4) |
申请公布日期 |
2013.09.04 |
申请号 |
EP20110756122 |
申请日期 |
2011.03.08 |
申请人 |
SONY CORPORATION |
发明人 |
SUZUKI, SHIRO;MATSUMURA, YUUKI;TOGURI, YASUHIRO;MAEDA, YUUJI |
分类号 |
G10L19/035;G10L19/02;H03M7/30 |
主分类号 |
G10L19/035 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|