公开(公告)号：US08085953B2

公开(公告)日：2011-12-27

申请号：US11738736

申请日：2007-04-23

申请人： Osamu Nakanura ,  Mototsugu Abe ,  Masayuki Nishiguchi

发明人： Osamu Nakanura ,  Mototsugu Abe ,  Masayuki Nishiguchi

IPC分类号： H03G7/00 ,  G10L21/04

CPC分类号： G10L21/04

摘要： An audio-signal time-axis expansion/compression method for subjecting an audio signal to time-axis expansion/compression at a time domain includes the steps of: cross-fade-signal generating wherein a first period and a second period which are similar within the audio signal are employed to generate the cross-fade signal of the first period signal and the second period signal; correction-signal generating wherein the difference signal between the first period signal and the second period signal is subjected to time-axis reversal, and is multiplied with a window function to generate a correction signal; and connection-waveform generating wherein the cross-fade signal and the correction signal are added to generate a connection waveform for subjecting the audio signal to time-axis expansion/compression at the time domain.

摘要翻译： 用于在时域对音频信号进行时间轴扩展/压缩的音频信号时间轴扩展/压缩方法包括以下步骤：交叉淡入淡出信号产生，其中第一周期和第二周期在 采用音频信号来产生第一周期信号和第二周期信号的交叉衰落信号; 校正信号产生，其中第一周期信号和第二周期信号之间的差信号经受时间轴反转，并且与窗函数相乘以产生校正信号; 以及连接波形生成，其中相交渐淡信号和校正信号相加以产生用于使音频信号在时域上进行时间轴扩展/压缩的连接波形。

公开(公告)号：US20070250324A1

公开(公告)日：2007-10-25

申请号：US11738736

申请日：2007-04-23

申请人： Osamu NAKANURA ,  Mototsugu Abe ,  Masayuki Nishiguchi

发明人： Osamu NAKANURA ,  Mototsugu Abe ,  Masayuki Nishiguchi

IPC分类号： G10L21/04

CPC分类号： G10L21/04

摘要： An audio-signal time-axis expansion/compression method for subjecting an audio signal to time-axis expansion/compression at a time domain includes the steps of: cross-fade-signal generating wherein a first period and a second period which are similar within the audio signal are employed to generate the cross-fade signal of the first period signal and the second period signal; correction-signal generating wherein the difference signal between the first period signal and the second period signal is subjected to time-axis reversal, and is multiplied with a window function to generate a correction signal; and connection-waveform generating wherein the cross-fade signal and the correction signal are added to generate a connection waveform for subjecting the audio signal to time-axis expansion/compression at the time domain.

摘要翻译： 用于在时域对音频信号进行时间轴扩展/压缩的音频信号时间轴扩展/压缩方法包括以下步骤：交叉淡入淡出信号产生，其中第一周期和第二周期在 采用音频信号来产生第一周期信号和第二周期信号的交叉衰落信号; 校正信号产生，其中第一周期信号和第二周期信号之间的差信号经受时间轴反转，并且与窗函数相乘以产生校正信号; 以及连接波形生成，其中相交渐淡信号和校正信号相加以产生用于使音频信号在时域上进行时间轴扩展/压缩的连接波形。