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Description: generating a sampling frequency of 2000, a digital signal composed of 50Hz, 120Hz, 200Hz sine and noise signals, filter out the frequency of 150Hz>f>100Hz, and calculate and display the original data waveforms before and after the filtering and the power spectral density.
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File list (Check if you may need any files):
| Filename | Size | Date |
|---|
| 9图形界面编程.ppt | 456192 | 2012-10-16
|
| ball.fig | 1974 | 2011-11-23
|
| ball.m | 7354 | 2010-10-01 |
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