Signal/Noise generator with Fourier based filterin
2016-08-23
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A nice teaching tool I wrote to demonstrate audio signal generation, noise addition, and Fourier based filtering.
The amplitude, phase, frequency and shape of the inputted waves can be adjusted, as can the noise level. This noise can then be filtered out via two methods, a frequency filter where any signal above or below a level is discarded, and an intensity filter, where any signal that is below a certain intensity is discarded. An audio tone can be played to demonstrate what is being done alongside a visual representation of the filtering.
matlab
信号
噪声
信号发生器
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