Peak-notch filter+Chirp not works as expected in time domain.

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Tamura Kentai 2019-8-30

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https://ww2.mathworks.cn/matlabcentral/answers/478220-peak-notch-filter-chirp-not-works-as-expected-in-time-domain

评论： Tamura Kentai 2019-8-30

notch_filter.slx

Hi, :

One thing strange is that I found in the file which I used a 'Chirp signal source with linearily varying frequency' + 'a notch filter' doesn't output the attenuated result at the central frequency of w0 = 50Hz, when I plot it on the time domain scope.

Did I make something wrong ? I checked the frequency response of the notch filter, but in time domain it's not, Iam confused.

Thank you for any help.

Best regards.

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Tamura Kentai 2019-8-30

notch_filter.slx

Hi, :

I have added a new 'bandstop' filter to see what's the differences, but it seems the 'bandstop' filter also strange, the output time response doesn't act like frequency response.

I have updated the attached file.

If you could kindly take a look at it, and try it.

I appreciate your suggestions.

Best regards.

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