发明授权
- 专利标题: Crosstalk cancellation using load impedence measurements
- 专利标题(中): 使用负载阻抗测量的串扰消除
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申请号: US11482595申请日: 2006-07-08
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公开(公告)号: US07925030B2公开(公告)日: 2011-04-12
- 发明人: Michael Holmström , Bengt Edholm , Sven Mattisson
- 申请人: Michael Holmström , Bengt Edholm , Sven Mattisson
- 申请人地址: SE Stockholm
- 专利权人: Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人: Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人地址: SE Stockholm
- 主分类号: H04R1/10
- IPC分类号: H04R1/10 ; H04R5/00
摘要:
A method and ASIC for canceling crosstalk between a first stereo channel and a second stereo channel, wherein a first signal is input to a first output amplifier for the first channel, and a second signal is input to a second output amplifier for the second channel, and an output load for each output amplifier is connected between each output amplifier and a reference amplifier. In one embodiment, the first and second signals are split prior to inputting the signals to the first and second output amplifiers, and a gain-adjusted portion of each signal is added to the other signal on the inputs of the output amplifiers. In another embodiment, the first and second input signals are again split into two paths each. While a first path of each signal is inputted to each signal's respective output amplifier, the second paths of the first and second signals are adding together. The resulting sum is adjusted by a gain function, biased by a suitable DC voltage, and input to the reference amplifier.
公开/授权文献
- US20080008325A1 Crosstalk cancellation using load impedence measurements 公开/授权日:2008-01-10
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