MATLAB What Causes the Fuzzy Bits in MATLAB Spectrum Analysis?

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The discussion revolves around an inquiry about a "fuzzy" area observed at the top of a spectrum in MATLAB, which the user suspects may be due to distortion or noise. They explain that they connected a Binouli random data source with a sample time of 1 and used a repeat block to generate the signal. The response emphasizes that performing operations on random data will inherently retain some randomness, suggesting that the observed fuzziness is expected and not necessarily indicative of a problem. The conversation highlights the nature of randomness in signal processing and the implications of manipulating random data sources in MATLAB.
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MATLAB! Question!

Hi,

http://www.geocities.com/spoutveg10/matlab.JPG

Does anyone know what the "fuzzy" bit at the tops of the spectrum are? I went for a complete guess out of distortion or noise. Any elaboration as to why?

I connected up a Binouli random data source with a sample time of 1, and added a repeat block (x5) to obtain this signal.


THANK YOU VERY MUCH IN ADVANCE! I APPRECIATE YOUR INPUT!
 
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Wait... you performed some operation on random data, and you're wondering why there is any randomness in the result?

I don't know what to say, except you can't expect randomness not to be random.
 

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