Finding frequency in simulink
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I have a signal after lowpassing and I am looking for its frequency. I thought I could use fft but:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/157375/image.png)
the buffer is set to 2048
- for some reason after Abs it's still negative, and its hard to determine frequency because of shape
- How do I get rid of the value in 0?
- How to determine the middle of the frequency "mountain"
Any other method of finding freq would be highly appreciated
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