Need to convert data from two sensors to the same sampling rate

Hi!

I have recorded data from two sensors with different sampling rates. I would like to convert both data vectors to the same sampling rate while preserving timing information of my waveforms. I have already researched using the resample command from the signal processing toolbox but I haven not been able to make it work for me.

Thank you!

[Matthew]

Important detail: The sampling rates are also not integer multiples of one another....

Answer 1

[Arnaud Miege]

Another suggestion, which is what I normally use for this type of problem: create a timeseries object and use the resample method.

HTH,

Arnaud

Answer 2

[Andrew]

Use rat to get the upsample downsample ratio for the resample method. You shouldn't have issues with preserving timing information as resample compensates for the filters delay.

Answer 3

[Sean de Wolski]

Perhaps interp1 to interpolate to the sampling rate you desire.

Answer 4

[Honglei Chen]

If you have Filter Design Toolbox or DSP System Toolbox, you may want to take a look at the documentation for fdesign.rsrc, it is specifically for rational rate conversion. There is also a demo named "Efficient Sample Rate Conversion between Arbitrary Factors" in the product.