I am sending a 20Khz signal from my phone and capturing all the signals while doing exercise above it. Here I have a signal of a person doing "hand scissors exercise"
I am doing analysis on how many times has the person done the exercise. I am able to figure that out in the frequency domain. But, the time-domain signal is very noisy, is there any way to extract any information in the time-domain from the existing signal that I have ?
The raw signal in the time-domain is given below, is there anything that can be done on this :
(Y -axis is the energy of the signal) (X-axis is the number of frames in the wave signal)