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Unformatted text preview: x ( t ) = sinc 2 (50 t ) + cos(120 πt ) . 5. Project 1, Chapter 2: Download sound7.wav from the course webpage and import it into MATLAB (a) What is the sampling rate? What is the duration of the audio clip? (b) Use MATLAB to plot the PSD of the signal (dBW/Hz vs. Hz). (c) What is the average power in this signal? (d) What fraction of the signal power lies in frequencies | f | ≤ 4 kHz? Hint: Remember that the DFT is periodic, so that X [-n ] = X [ N-n ]. Turn in your codes, plots and the analysis. 1...
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This note was uploaded on 01/28/2012 for the course ECE 402 taught by Professor Townsend during the Fall '08 term at N.C. State.
- Fall '08