Correlation between mother wavelet and ECG signal
1 次查看(过去 30 天)
显示 更早的评论
Hi all,
I am doing wavelet denoising for my ECG signal. In order to choose best mother wavelet for my signal, i have to correlate it first with my input signal.
How can i correlate a mother wavelet and ECG signal in Matlab? I can correlate two ECG signals, but not a mother wavelet and a ECG signal.
This due to the fact that i cannot get mother wavelet in an array. All i get is "db4" or "db8" as a character. How can i get a mother wavelet into an array and correlate with my signal?
3 个评论
ATHIRA
2013-11-1
use wavefun in matlab.we will get both wavelet and scaling function.Then change the size of the wavelet function to match with the signal and then find out correlation
采纳的回答
Wayne King
2013-11-1
The results for wavelet denoising should not be that heavily dependent on the choice of wavelet.
For EEG data, I would recommend starting with one of Daubechies' least asymmetric wavelets with at least 4 vanishing moments, 'sym4' for example.
1 个评论
debojit sharma
2023-5-16
For time-frequency analysis, Can I use symlets wavelet family in CWT?
I mean if I use the in-built function of MatLab 'cwt' to find CWT coefficient of a signal as follows:
cfs=cwt(y,scales,'sym4','plot');
cfs=abs(cfs);
Is it valid to use symlet wavelet here for CWT? In earlier version of MatLab this was there.
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Continuous Wavelet 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!