发明名称 |
Technique for reducing power consumption in digital filters |
摘要 |
In a digital filter having tap coefficients, a gain element is employed to scale the filter output. The gain element is controlled by an error monitor element which runs an adaptive process in accordance with the invention. Such a process causes each tap coefficient value to be changed so as to reduce power consumption in the filter. On the other hand, the process ensures that the filter output maintains an acceptable signal to noise ratio (SNR), despite losing the bit precision of the filter as a result of the change of the coefficient values.
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申请公布号 |
US5777914(A) |
申请公布日期 |
1998.07.07 |
申请号 |
US19960697755 |
申请日期 |
1996.08.29 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
LARSSON, PATRIK;NICOL, CHRISTOPHER JOHN |
分类号 |
H03H17/02;H03H21/00;(IPC1-7):G06F17/10 |
主分类号 |
H03H17/02 |
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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