Remove noise of the signal with some commands

I have data of aorta signals of patients in which I have to remove the noise which is present in the middle of the signals. I want a clean signal in which I should identify systolic peaks, diastolic peaks and so on (for this I have a function to identify). Can anyone help me out to remove or delete permanently the noise from the existing signal? I want to remove the gaps in the signal and there are some huge peaks lines that I want to remove as well.

Thank you for your help and your time.

I appreciate the help.

[Jesus Sanchez]

The signal that you attached is in time domain or in frequency domain? If its in time, I would convert it to frequency to get its spectrum and the apply a passband filter to delete the frequencies that you dont need. For instance, for signals recorded with medical equipment there is a noise at 50 Hz or 60 Hz, depending of the country you are at. Check fft and bandpass

[Image Analyst]

Is that the cleanest ECG signal you can get? If I were you, I'd get a better instrument.

[Lokeswara reddy pamulapate]

@Jesus Sanchez it is in time domain. It is very huge data of one patient.

[Lokeswara reddy pamulapate]

@Image Analyst It is not ecg signal it is pulse wave velocity signal of Aorata. The data is loaded by the doctors, I have no involment in taking the patients data. I have to clean this existing data. Please give me any inputs to go forward.

Thankyou

[Lokeswara reddy pamulapate]

please help me

Answer 1

[Rajat Tewari]

To remove noise from the data you can refer to these methods:

1. https://in.mathworks.com/help/wavelet/ref/waveletsignaldenoiser-app.html
2. https://in.mathworks.com/help/wavelet/ref/wdenoise.html
3. https://in.mathworks.com/help/wavelet/examples/denoising-signals-and-images.html

Hope it helps.