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Technique for reducing power consumption in digital filters
Technique for reducing power consumption in digital filters
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机译:减少数字滤波器功耗的技术
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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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