发明名称 |
Tunable filter for tone detection |
摘要 |
Apparatus arranged to analyse a signal comprising a series of symbols, the apparatus comprising means for calculating a metric of said signal, filter means for filtering said signal, means for calculating a metric of said filtered signal and means for comparing said metrics, wherein the filtering means is arranged to track a spectral feature of the signal and maintain that feature within the pass band of the filtering means. |
申请公布号 |
US8270458(B2) |
申请公布日期 |
2012.09.18 |
申请号 |
US20070782242 |
申请日期 |
2007.07.24 |
申请人 |
VALADON CYRIL;MSTAR SEMICONDUCTOR, INC.;MSTAR SOFTWARE R&D, LTD.;MSTAR FRANCE SAS |
发明人 |
VALADON CYRIL |
分类号 |
H04B3/46;H04B17/00;H04Q1/20;H04Q1/46 |
主分类号 |
H04B3/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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