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发明名称
回声防止电路、滤波系数设定方法及程序
摘要
本发明提供一种回声防止电路、滤波系数设定方法及程序。将由差动放大电路(19)及放大电路(17)构成的放大电路的增益设定为第一增益,取得脉冲回应IR1′(Z)及IR2′(Z)。并且基于脉冲回应IR1′(Z)及IR2′(Z),能删除回声地设定FIR滤波器的滤波系数。其后,将由差动放大电路(19)及放大电路(17)构成的放大电路的增益设定为比第一增益大的第二增益。从而通过取得高精度的脉冲回应而能有效地防止回声。
申请公布号
TW200737775
申请公布日期
2007.10.01
申请号
TW096102156
申请日期
2007.01.19
申请人
三洋电机股份有限公司
发明人
井上健生;大桥秀纪;女屋佳隆
分类号
H04B3/20(2006.01);H04R3/02(2006.01)
主分类号
H04B3/20(2006.01)
代理机构
代理人
刘緖伦
主权项
地址
日本
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