hey guys - i can't seem to find find this statement anywhere - but it makes sense to me - could someone please verify.(adsbygoogle = window.adsbygoogle || []).push({});

When you find the DFT of a signal say: x[0]=2, x[1]=4, x[2]=6, x[3]=8 - you will get four discrete points in frequency (per period) now if you zero pad the time signal such that you get x[0]=2, x[1]=4, x[2]=6, x[3]=8 x[4]=0, x[5]=0, x[6]=0, x[7]=0 - you will once agin get four discrete frequency points but now the gap between each period will be larger (thus decreasing any chances of aliasing)

thnks

**Physics Forums - The Fusion of Science and Community**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# DFT - zero padding avoids aliasing?

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

Loading...

Similar Threads - zero padding avoids | Date |
---|---|

Exponential forcing function to an RL circuit -- poles & zeros | Oct 22, 2017 |

Analog zero-point synced AC PWM: is there a better way? | Apr 17, 2017 |

AC Current in GHz Frequency and Zero Resistance | Mar 23, 2017 |

FFT zero padding issue | May 5, 2012 |

**Physics Forums - The Fusion of Science and Community**