Resampling a signal with variable frequency [duplicate]

1. Is resampling the same as upsampling?
2. Is resampling the same as interpolation?
3. How to resample non uniform data matlab?

Is resampling the same as upsampling?

Resampling involves changing the frequency of your time series observations. Two types of resampling are: Upsampling: Where you increase the frequency of the samples, such as from minutes to seconds. Downsampling: Where you decrease the frequency of the samples, such as from days to months.

Is resampling the same as interpolation?

Resampling is used to either increase the sample rate (make the image larger) or decrease it (make the image smaller). Interpolation is the process of calculating values between sample points. So, if you resample an image you can use interpolation to do it.

How to resample non uniform data matlab?

To resample a nonuniformly sampled signal, you can call resample with a time vector input. The next example converts our original signal to a uniform 44.1 kHz rate. You can see that our resampled signal has the same shape and size as the original signal.