- The letter "A" as the name of the variable, which holds the force data, is a poor choice.
- There is half a second more acceleration data than force data.
- interp1() is older than resample().
- to use resample() requires more reading of the documentation
Resampling two signals to the same frequency
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I've attached two matrix.
Force data were collected at 2000 Hz and acceleration data at 2222 Hz.
My goal is to sample these two signals to the same frequency. I guess that the best method is to resample the acceleration data at 2222 Hz ?
I'm quite lost between the Matlab functions interp, resample, etc...
Could you help me please ?
Thanks in advance for your help,
per isakson on 13 Nov 2020
Edited: per isakson on 13 Nov 2020
To use interp1() (or resample()) time data is needed.
Try this script to see if it does what you want.
A = load('Acceleration_Data.mat');
F = load('Force_Data.mat');
A.time = linspace( 0, numel(A.B)/2222, numel(A.B) );
F.time = linspace( 0, numel(F.A)/2000, numel(F.A) );
F.resample = interp1( F.time, F.A, A.time, 'linear', nan );
"I guess that the best method is to resample the acceleration data at 2222 Hz ?" I'm not sure what this means.
Do you want to resample acceleration?
A.resample = interp1( A.time, A.B, F.time, 'linear', nan );