9.8.3 Lowpass and Highpass Filters Using firpm function of MATLAB, design a lowpass and a highpass...

9.8.3 Lowpass and Highpass Filters

Using firpm function of MATLAB, design a lowpass and a highpass filter to filter
out highpass and lowpass components of DTMF tones, respectively. Do not use very
high-order FIR filters.

1. Lowpass filter:
a. Filter out the highpass component of the signal you generated through the
lowpass filter designed by firpm. Note: You should use convolution not FFT
b. Plot a couple of periods of the output signal
c. Plot the spectrum of the output signal, comment on the spectrum
2. Highpass filter: Repeat (a,b,c) for the highpass filter

Expert Solution

Manojponduru answered 7 hours ago

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