Question

5. Problem Statement (Hint: some functions that might be useful: audioread, wavread, fft) Record a speech audio signal and save it to your computer. Input this signal into MATLAB. Do the following manipulations: 1. Find out the actual sampling rate. 2. Perform spectrum analysis on the signal (Fourier transform) and plot the spectrum. 3. Change the sampling rate to: a. A value higher than double the original sampling frequency b. A value less than half the original sampling rate. c. Playback the altered signals I parts a. and b. 4. Repeat step 2. For the signals produced in step 3 6. Discussion a. Discuss the effects of changing the sampling frequency (as seen in step 3.)? b. Find the bandwidth of the original signal and the Nyquist rate? c. One ".m" file should be created for all of the questions with your detailed comments explaining each of the steps in your ".m" file.

          5. Problem Statement
(Hint: some functions that might be useful: audioread, wavread, fft)
Record a speech audio signal and save it to your computer. Input this signal into MATLAB.
Do the following manipulations:
1. Find out the actual sampling rate.
2. Perform spectrum analysis on the signal (Fourier transform) and plot the
spectrum.
3. Change the sampling rate to:
a. A value higher than double the original sampling frequency
b. A value less than half the original sampling rate.
c. Playback the altered signals I parts a. and b.
4. Repeat step 2. For the signals produced in step 3
6. Discussion
a. Discuss the effects of changing the sampling frequency (as seen in step 3.)?
b. Find the bandwidth of the original signal and the Nyquist rate?
c. One ".m" file should be created for all of the questions with your detailed comments
explaining each of the steps in your ".m" file.

5. Problem Statement
(Hint: some functions that might be useful: audioread, wavread, fft)
Record a speech audio signal and save it to your computer. Input this signal into MATLAB.
Do the following manipulations:
1. Find out the actual sampling rate.
2. Perform spectrum analysis on the signal (Fourier transform) and plot the
spectrum.
3. Change the sampling rate to:
a. A value higher than double the original sampling frequency
b. A value less than half the original sampling rate.
c. Playback the altered signals I parts a. and b.
4. Repeat step 2. For the signals produced in step 3
6. Discussion
a. Discuss the effects of changing the sampling frequency (as seen in step 3.)?
b. Find the bandwidth of the original signal and the Nyquist rate?
c. One ".m" file should be created for all of the questions with your detailed comments
explaining each of the steps in your ".m" file.

Added by Joel T.

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