发明名称 |
Non-integer decimation using cascaded intergrator-comb filter |
摘要 |
A non-integer decimation filter for decimating an input value includes a first integrator for integrating the input value in an input sample domain at an input sample rate and for generating a first integral of the input value at its output and a second integrator for integrating the first integral of the input value in the input sample domain at the input sample rate and for generating a second integral at its output. A calculation network is coupled to the outputs of the first and second integrators for combining the outputs of the first and second integrators with corresponding coefficients to generate intermediate output values in an output sample domain. A differentiator is configured to receive the intermediate output values from the calculation network and to generate a decimated output value at an output sample rate in which the output sample rate has a non-integer factor with respect to the input sample rate.
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申请公布号 |
US7196648(B1) |
申请公布日期 |
2007.03.27 |
申请号 |
US20050317546 |
申请日期 |
2005.12.23 |
申请人 |
CIRRUS LOGIC, INC. |
发明人 |
DING LEI;MELANSON JOHN L.;FEI XAIOFAN;GABORIAU JOHANN |
分类号 |
H03M1/66 |
主分类号 |
H03M1/66 |
代理机构 |
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地址 |
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