3.158 FAQ-1023 How do I synchronize two sensor signals recorded with different sampling rates?

Last Update: 10/17/2019

To synchronize two sensor signals recorded with different sampling rates, you can use interpolation tool in Origin. Suppose you have four columns for two signals in the worksheet: X1, Y1, X2 and Y2, and you want two signals with the same sampling rate as X1. First add a new column at the right, set as X, right click on the column, select Set Column Values from the short-cut menu, and type A in the opened dialog to make a copy of X1. Select Analysis: Mathematics: Interpolate/Extraploate Y from X from Origin menu, choose the new column as X Values to Interpolate, X2Y2 columns as Input. The created Y3 (column F) will have the same sampling rate as Y1.
Syn Two Signals Data.png

If you have two signals of two Y columns with Sampling Interval, first add a new column at the right, set as X, right click on the column, select Set Column Values from the short-cut menu, and type xof(A) in the opened dialog to make a copy of Y1 (column A)'s X. Follow same steps as above to create Y3 (column D), which has the same sampling rate as Y1 (column A).
Syn Two Signals SampleInt.png


Keywords:synchronize, sampling rates, interpolation, interpolate, Sampling Interval, mathematics