How to smooth signal and find dominant freqeuncy using FFT?
4 次查看(过去 30 天)
显示 更早的评论
Hi. I am not so familiar with signal processing. I have this oscillation which I like to find its dominant frequency. I used FFT, but it does not give me any specific value.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/149363/image.jpeg)
After all, can we define any frequency for this kind of oscillations? How can I smooth the data? I used filter and sgolayfilt, but they didn;t change the data at all.
Thanks in advance!
Steven
0 个评论
回答(1 个)
Samudrala Jagadish
2015-9-27
If you want to smooth the given signal without using FFT Filtering, they you may use a concept called "Moving Average Filter" Please follow my file exchange link as given below it contains a code to smooth a signal upto some extent
here is the link:
0 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Transforms 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!