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How to select a proper method for detecting onset of signals? #239
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Hi @yijun1994 , Thx for your interest in Would you have a visual graph of those data ? In the mean time, you can find in the documentation User Guide the list of all the cost function available in |
To detect changes in amplitude, you can use Hope this helps |
The detected changes might not be at the exact location you want, because there is a small amplitude phase between the flat phase and the full amplitude phase. Some ah-hoc post-processing might be needed in any case. |
is 'ah-hoc post-processing' a specific method in signal processing? |
No, it is whatever method you can find to add more precision if the detected changes are a bit "off". |
Closing for now. Feel free to reopen. |
I have a need for detecting change point of seismic waves, the onset seem quite obvious by visual inspection.
But costAR and costL2 seem failed to detect the change point. Could you give me some suggestions about how to select a proper cost function among presented ones?
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