hw6 - of the corresponding peak and read the frequency from...

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HW6 1. See squarewave.wav in folder hw6. 2. To generate the file I opened Cool Edit, clicked on the Generate tab on the top menu bar and then on Tones. In the Generate Tones dialog box, I made sure the base frequency was 1000Hz, the Flavor was square, and the duration was 1 second before clicking OK. To save the file, I clicked on the File icon on the top menu bar, clicked on Save As… and saved the file in the wav format to my folder hw6. Note that one period of the wave extends from about 0.49950 seconds to 0.50050 seconds. This means the period of the square wave is 0.50050 – 0.49950 = .001 seconds. The frequency, f , of a wave is the reciprocal of its period, T . = = . = f 1T 1 001sec 1000Hz 3. To display the spectrum of the square wave I clicked on the Zoom Out Full icon and double-clicked the wave to highlight the entire region from 0 to 1 second. I clicked on the Analyze item on the menu bar and set FFT size to 1024 and the window to a Blackmann-Harris shape. Finally, I hit the scan button to complete the analysis of the waveform.
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To measure the frequency of the fundamental and each of the harmonics, I placed the pointer over the tip
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Unformatted text preview: of the corresponding peak and read the frequency from the Cursor field on the Analysis dialog box. Here are my values. Multiple 1 3 5 7 9 11 13 15 17 19 21 Frequency 1002 3006 5011 7000 9004 10900 12990 15000 17000 19010 21010 4. The whitenoise.wav is saved in the folder hw6. To generate the file I opened Cool Edit, clicked on the Generate tab on the top menu bar and then on Noise. In the Generate Noise dialog box, I made sure the White Noise box was clicked and the duration was 1 second before clicking OK. To save the file, I clicked on the File icon on the top menu bar, clicked on Save As and saved the file in the wav format to my folder hw6. To display the spectrum of the white noise I clicked on the Zoom Out Full icon and double-clicked the wave to highlight the entire region from 0 to 1 second. I clicked on the Analyze item on the menu bar and set FFT size to 1024 and the window to a Blackmann-Harris shape. Finally, I hit the scan button to complete the analysis of the waveform....
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This homework help was uploaded on 04/19/2008 for the course ECE 1002 taught by Professor Moorhead during the Fall '07 term at Mississippi State.

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hw6 - of the corresponding peak and read the frequency from...

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