发明授权
- 专利标题： Echo cancelling device
- 专利标题（中）： 回波消除装置
-
申请号： US14361835申请日： 2012-04-25
-
公开(公告)号： US09210502B2公开(公告)日： 2015-12-08
- 发明人: Takashi Sudo , Atsuyoshi Yano , Tomoharu Awano
- 申请人： Takashi Sudo , Atsuyoshi Yano , Tomoharu Awano
- 申请人地址： JP Tokyo
- 专利权人： Mitsubishi Electric Corporation
- 当前专利权人： Mitsubishi Electric Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 国际申请： PCT/JP2012/002838 WO 20120425
- 国际公布： WO2013/160945 WO 20131031
- 主分类号： H04B3/20
- IPC分类号： H04B3/20 ; H04R3/00 ; H04M9/08
摘要：
An echo cancelling device splits a low-band signal through LPFs having characteristics which do not cause aliasing during downsampling of downsamplers, and splits a high-band signal through HPFs having characteristics which do not cause aliasing during downsampling of downsamplers. The echo canceling device generates a mid-band signal by subtracting the low-band signal and the high-band signal from a pre-split signal by adder-subtractors, and cancels an echo on a band-by-band basis.
公开/授权文献
- US20140286498A1 ECHO CANCELLING DEVICE 公开/授权日：2014-09-25
信息查询
