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MATLAB FIR Filter Design Exercise

Module by: Hyeokho Choi

Summary: This is FIR filter design exercise in MATLAB.

FIR Filter Design MATLAB Exercise

Design by windowing

Problem 1
Assuming sampling rate at 48kHz, design an order-40 low-pass filter having cut-off frequency 10kHz by windowing method. In your design, use Hamming window as the windowing function.
[ Click for Solution 1 ]
Solution 1 
		
		b = fir1(40,10.0/48.0)
[ Hide Solution 1 ]

Parks-McClellan Optimal Design

Problem 2
Assuming sampling rate at 48kHz, design an order-40 lowpass filter having transition band 10kHz-11kHz using the Parks-McClellan optimal FIR filter design algorithm.
[ Click for Solution 2 ]
Solution 2 
		
		b = remez(40,[1 1 0 0],[0 10/48 11/48 1])
[ Hide Solution 2 ]

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