发明申请
US20130006647A1 ENCODING DEVICE AND ENCODING METHOD, DECODING DEVICE AND DECODING METHOD, AND PROGRAM
有权
编码设备和编码方法，解码设备和解码方法以及程序
- 专利标题： ENCODING DEVICE AND ENCODING METHOD, DECODING DEVICE AND DECODING METHOD, AND PROGRAM
- 专利标题（中）： 编码设备和编码方法，解码设备和解码方法以及程序
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申请号： US13583994申请日： 2011-03-08
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公开(公告)号： US20130006647A1公开(公告)日： 2013-01-03
- 发明人: Shiro Suzuki , Yuuki Matsumura , Yasuhiro Toguri , Yuuji Maeda
- 申请人： Shiro Suzuki , Yuuki Matsumura , Yasuhiro Toguri , Yuuji Maeda
- 优先权： JP2010-061171 20100317
- 国际申请： PCT/JP2011/055294 WO 20110308
- 主分类号： G10L19/00
- IPC分类号： G10L19/00
摘要：
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.
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