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Altera_Forum
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8 years ago

Butterworth Low Pass filter Implementation

Hi, In my application I need to implement high order Butterworth Low Pass filter to ~1Hz from 32bits, ~50ksps input signal. How can I evaluate the filter performance and estimate the resources...
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Altera_Forum
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8 years ago

The number of extra fractional bits can be estimated from the small numerator coefficient of the 2nd order block (about 1.6e-8). Word length effects can be simulated with Matlab fixed point package, I presume also with DSP builder.