FILTER CHAINS WITH IMPROVED SIGNAL TO NOISE RATIO
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United States of America
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Issued Date -
Apr 10, 2025
app pub date -
Dec 19, 2024
filing date -
Dec 19, 2024
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Abstract
Methods and apparatus are provided for adapting gain elements in digital filter chains. In one example, a digital filter chain includes a first digital filter and a second digital filter. The first digital filter includes a fixed point finite impulse response (FIR) filter and includes an output gain element. The second digital filter has an input coupled to an output of the first digital filter and includes an IIR filter. The output gain element applies a common output gain value that is based on a product of an input gain configured in association with the second digital filter and an FIR output gain that is based on a scaling factor K associated with the first digital filter.
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