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    • 65. 发明专利
    • Encoding device, decoding device, encoding method and decoding method
    • 编码设备,解码设备,编码方法和解码方法
    • JP2011175278A
    • 2011-09-08
    • JP2011089954
    • 2011-04-14
    • Panasonic Corpパナソニック株式会社
    • OSHIKIRI MASAHIROMORII TOSHIYUKIYAMANASHI TOMOHITO
    • G10L19/16H03M7/30
    • G10L19/00G10L19/005G10L19/02G10L19/038G10L19/24G10L25/18
    • PROBLEM TO BE SOLVED: To provide a voice encoding device for accurately encoding the spectral shape of a signal having a strong tonality, such as a vowel. SOLUTION: A sub-band constituting unit 151 divides a first layer error conversion coefficient to be encoded into M-pieces of sub-bands to generate M-pieces of sub-band conversion coefficients. A shape vector encoding unit 152 performs encoding on each of the M-pieces of sub-band conversion coefficients to obtain M-pieces of shape encoded information and calculates a target gain of each of the M-pieces of sub-band conversion coefficients. A gain vector forming unit 153 forms one gain vector by using M-pieces of target gains. A gain vector encoding unit 154 encodes the gain vector to obtain gain encoded information, and a multiplexing unit 155 multiplexes the shape encoded information with the gain encoded information. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于精确地编码具有强音调的信号(例如元音)的频谱形状的语音编码装置。 解决方案:子带构成单元151将要编码的第一层错误转换系数划分为M个子带,以产生M个子带转换系数。 形状矢量编码单元152对M个子带转换系数中的每一个进行编码以获得M个形状编码信息,并计算M个子带转换系数中的每一个的目标增益。 增益矢量形成单元153通过使用M个目标增益来形成一个增益矢量。 增益矢量编码单元154对增益矢量进行编码以获得增益编码信息,并且复用单元155将形状编码信息与增益编码信息进行复用。 版权所有(C)2011,JPO&INPIT