Resampling two signals to the same frequency

8 次查看(过去 30 天)
Hi guys,
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,

采纳的回答

per isakson
per isakson 2020-11-13
编辑:per isakson 2020-11-13
Comments
  • 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
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 );

更多回答(0 个)

类别

Help CenterFile Exchange 中查找有关 Multirate Signal Processing 的更多信息

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by