公开(公告)号：EP3128513A4

公开(公告)日：2017-03-29

申请号：EP15774034

申请日：2015-03-23

Applicant: PANASONIC IP CORP AMERICA

Inventor： NAGISETTY SRIKANTH ,  LIU ZONG XIAN ,  EHARA HIROYUKI

IPC: G10L19/02 ,  H03M7/30

CPC classification number: G10L19/0208 ,  G10L19/028 ,  G10L19/035 ,  G10L21/038

Abstract: An encoder according to the present disclosure includes a first encoding unit that generates a first encoded signal in which a low-band signal having a frequency lower than or equal to a predetermined frequency from a voice or audio input signal is encoded, and a low-band decoded signal; a second encoding unit that encodes, on the basis of the low-band decoded signal, a high-band signal having a band higher than that of the low-band signal to generate a high-band encoded signal; and a first multiplexing unit that multiplexes the first encoded signal and the high-band encoded signal to generate and output an encoded signal. The second encoding unit calculates an energy ratio between a high-band noise component, which is a noise component of the high-band signal, and a high-band non-tonal component of a high-band decoded signal generated from the low-band decoded signal and outputs the calculated ratio as the high-band encoded signal.

Abstract translation: 根据本公开的编码器包括：第一编码单元，其生成其中编码具有来自语音或音频输入信号的低于或等于预定频率的频率的低频带信号的第一编码信号， 频带解码信号; 第二编码单元，其基于所述低频带解码信号编码具有比所述低频带信号的频带高的频带的高频带信号，以生成高频带编码信号; 以及第一复用单元，其多路复用第一编码信号和高频带编码信号以产生并输出编码信号。 第二编码单元计算作为高频带信号的噪声分量的高频带噪声分量与从低频带产生的高频带解码信号的高频带非音调分量之间的能量比 并将计算出的比值作为高频带编码信号输出。