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1. 发明授权

US07650000B2 Audio device and playback program for the same 失效
标题翻译：音频设备和播放程序相同
公开(公告)号：US07650000B2
公开(公告)日：2010-01-19
申请号：US10514277
申请日：2002-09-10
申请人： Kazuhiro Kawana , Toshio Saito , Hareo Hamada , Noriyuki Hanawa
发明人： Kazuhiro Kawana , Toshio Saito , Hareo Hamada , Noriyuki Hanawa
IPC分类号： H04R5/00
CPC分类号： H04S5/005 , H04S3/00
摘要： The input signal X of one channel is divided by a multi-stage delay processing device Z−1 and each of the outputs is superimposed by a specified coefficient by a coefficient processing device W0, W1, . . . , Wk. The results are added by an adder, thereby providing a correlation eliminating filter for extracting a signal component from the input signal X of one channel having a high correlation with the input signal Y of the other channel. There is provided a coefficient updating processing device 5 for successively changing the feature of the correlation eliminating filter according to an error signal e obtained from the output signal RES and the input signal Y from the other channel, and the input signal X of one channel. A surround signal is obtained from a difference between the output RES from the correlation eliminating filter and the input signal Y of the other channel. Thus, upon reproduction of a two channels stereo signal, it is possible to generate a surround signal not giving uncomfortable feeling to a listener.
摘要翻译：一个通道的输入信号X由多级延迟处理装置Z-1划分，并且每个输出由系数处理装置W0，W1叠加指定的系数。。。，Wk。结果由加法器相加，从而提供相关消除滤波器，用于从与另一个信道的输入信号Y具有高相关性的一个信道的输入信号X中提取信号分量。提供了一种系数更新处理装置5，用于根据从另一个信道得到的输出信号RES和输入信号Y以及一个信道的输入信号X依次改变相关消除滤波器的特征。从相关消除滤波器的输出RES和另一个信道的输入信号Y之间的差获得环绕信号。因此，在再现双声道立体声信号时，可以产生不给收听者带来不适感的环绕信号。

2. 发明申请

US20060013101A1 Audio apparatus and its reproduction program 失效
标题翻译：音频设备及其再现程序
公开(公告)号：US20060013101A1
公开(公告)日：2006-01-19
申请号：US10514277
申请日：2002-09-10
申请人： Kazuhiro Kawana , Toshio Saito , Hareo Hamada , Noriyuki Hanawa
发明人： Kazuhiro Kawana , Toshio Saito , Hareo Hamada , Noriyuki Hanawa
IPC分类号： G11B3/74
CPC分类号： H04S5/005 , H04S3/00
摘要： The input signal X of one channel is divided by a multi-stage delay processing device Z−1 and each of the outputs is superimposed by a specified coefficient by a coefficient processing device W0, W1, . . . , Wk. The results are added by an adder , thereby providing a correlation eliminating filter for extracting a signal component from the input signal X of one channel having a high correlation with the input signal Y of the other channel. There is provided a coefficient updating processing device 5 for successively changing the feature of the correlation eliminating filter according to an error signal e obtained from the output signal RES and the input signal Y from the other channel, and the input signal X of one channel. A surround signal is obtained from a difference between the output RES from the correlation eliminating filter and the input signal Y of the othe channel. Thus, upon reproduction of a two channels stereo signal, it is possible to generate a surround signal not giving uncomfortable feeling to a listener.
摘要翻译：一个通道的输入信号X由多级延迟处理装置Z0-1分频，并且每个输出由系数处理装置W 0 叠加指定的系数， SUB，W 1，...，。。，W k k。结果由加法器添加，从而提供一个相关消除滤波器，用于从与另一个信道的输入信号Y具有高相关性的一个信道的输入信号X中提取信号分量。提供了一种系数更新处理装置5，用于根据从另一个信道得到的输出信号RES和输入信号Y以及一个信道的输入信号X依次改变相关消除滤波器的特征。从相关消除滤波器的输出RES和通道的输入信号Y之间的差获得环绕信号。因此，在再现双声道立体声信号时，可以产生不给收听者带来不适感的环绕信号。

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