# CA 1 - ECE 408 Dr. Kang CA # 1 Rami Kiriako Oct. 8, 2007 1....

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0 20 40 60 80 100 -1 -0.5 0 0.5 1 Input Signal: Random Noise 0 200 400 600 800 1000 1200 -1 -0.5 0 0.5 Output Waveform of the LPF 0 0.5 1 1.5 2 x 10 4 0 100 200 300 Spectrum of the Input Signal 0 200 400 600 800 1000 1200 0 10 20 30 40 Spectrum of the LPF Output Signal 0 20 40 60 80 100 0 0.02 0.04 0.06 0.08 0.1 Impulse Response of LPF 0 0.2 0.4 0.6 0.8 1 0 0.5 1 1.5 Magnitude Response of LPF 0 0.2 0.4 0.6 0.8 1 -0.4 -0.3 -0.2 -0.1 0 Phase Response of LPF -1 0 1 -1 -0.5 0 0.5 1 Real Part Imaginary Part Pole-Zero Diagram of LPF ECE 408 CA # 1 Rami Kiriako Dr. Kang Oct. 8, 2007 1. Generate 16384 samples of random noise and pass it through a digital lowpass filter with transfer function 1 9 . 0 1 1 10 1 ) ( - - = z z H . (a) Play the sounds before and after the filter. (b) Plot the waveforms in the time domain before and after the filter. (c) Plot the spectrums (fft magnitude) before and after the filter. (d) Plot the impulse response, magnitude response, phase response, pole-zero diagram of the filter.

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## This note was uploaded on 08/09/2010 for the course ELECTRICAL ECE 408 taught by Professor Jameskang during the Summer '10 term at Cal Poly Pomona.

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CA 1 - ECE 408 Dr. Kang CA # 1 Rami Kiriako Oct. 8, 2007 1....

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