generating noisy data to play with in DSP

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fima v 2021-3-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/775347-generating-noisy-data-to-play-with-in-dsp

Hello,is there a way in matlab to create a signal put a high frequency noise on it and take samples from it to play with DSP FIR filter later.

Like the example samples showsn bellow.

Is there a tool in matlab that can generate such a thing?

Thanks.

// Test data of a 10kHz cosine wave
float32_t testData[128] =
{
  0,9.6592579,5,-7.0710678,-8.6602535,2.5881906,10,2.5881906,-8.6602535,
  -7.0710678,5,9.6592579,6.1232342e-15,-9.6592579,-5,7.0710678,8.6602535,
  -2.5881906,-10,-2.5881906,8.6602535,7.0710678,-5,-9.6592579,-1.2246468e-14,
  9.6592579,5,-7.0710678,-8.6602535,2.5881906,10,2.5881906,-8.6602535,
  -7.0710678,5,9.6592579,-1.7157435e-14,-9.6592579,-5,7.0710678,8.6602535,
  -2.5881906,-10,-2.5881906,8.6602535,7.0710678,-5,-9.6592579,-2.4492937e-14,
  9.6592579,5,-7.0710678,-8.6602535,2.5881906,10,2.5881906,-8.6602535,
  -7.0710678,5,9.6592579,-4.9109666e-15,-9.6592579,-5,7.0710678,8.6602535,
  -2.5881906,-10,-2.5881906,8.6602535,7.0710678,-5,-9.6592579,3.4314870e-14,
  9.6592579,5,-7.0710678,-8.6602535,2.5881906,10,2.5881906,-8.6602535,
  -7.0710678,5,9.6592579,-6.3718772e-14,-9.6592579,-5,7.0710678,8.6602535,
  -2.5881906,-10,-2.5881906,8.6602535,7.0710678,-5,-9.6592579,-4.8985874e-14,
  9.6592579,5,-7.0710678,-8.6602535,2.5881906,10,2.5881906,-8.6602535,
  -7.0710678,5,9.6592579,-2.6463513e-13,-9.6592579,-5,7.0710678,8.6602535,
  -2.5881906,-10,-2.5881906,8.6602535,7.0710678,-5,-9.6592579,9.8219332e-15,
  9.6592579,5,-7.0710678,-8.6602535,2.5881906,10,2.5881906
};