FIR Filter - Unsure so can someone check these results?

22 October 2023 1 2K Report

I'm sure I calculated the values correctly for an FIR Filter (In Excel - highlighted in yellow on attached) but when using the MATLAB Filter Designer, the Impulse Response seems off.

Attempt in MATLAB was for an Equiripple Low Pass FIR with an order of 17 so n= -8...0...8

Further into my work I experiment with the Hanning Window, which calculates and plots correctly so no idea what I'm doing wrong.

Any pointers on this are gratefully received.

Hugh Lachlan Kennedy

I wrote this document to help people understand the basics of digital filter design.

You may find it useful.

(See ”Lecture notes on the design of low-pass digital filters with wireless-communication applications”)

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