search

levylabpitt / xy_utilities

Utilities for working with XY data in LabVIEW
BSD 3-Clause "New" or "Revised" License
2 stars 0 forks source link

Interpolation vs resampling #21

Open ciozi137 opened 3 years ago

ciozi137 commented 3 years ago
ciozi137 commented 3 years ago

These are the strict definitions from https://dspguru.com/dsp/faqs/multirate/basics/

  1. Decimation: To decrease the sampling rate,
  2. Interpolation: To increase the sampling rate, or,
  3. Resampling: To combine decimation and interpolation in order to change the sampling rate by a fractional value that can be expressed as a ratio. For example, to resample by a factor of 1.5, you just interpolate by a factor of 3 then decimate by a factor of 2 (to change the sampling rate by a factor of 3/2=1.5.)

When we say "Interpolate" we mean resampling + padding edges