- #1
Spimon
- 25
- 0
Hi everyone,
Please excuse the somewhat basic question. I'm a mechanical engineering student a little out of my realm!
I'm doing some work with signal processing and have been given some data (a series of vibration measurements, out of interest).
This includes the following:
I'm a little confused about the difference between #2 and #4 mean.
My understanding was that the max frequency output from the Fast Fourier Transform is a resolution and determines the smallest change in frequency that can be detected.
I'm quite unsure what FFT Frequency Resolution is...
Would someone kindly explain these terms in very simple words (mathematical derivations not required)?
Thanks :)
Please excuse the somewhat basic question. I'm a mechanical engineering student a little out of my realm!
I'm doing some work with signal processing and have been given some data (a series of vibration measurements, out of interest).
This includes the following:
Note the following:
1. Recording Time Length (s): 5 seconds
2. FFT Frequency Resolution (1/s): 0.2 s
3. Sampling Rate (Hz): 100 Hz
4. Max frequency output from the FFT (Hz) (0.5*Sampling Rate): 50 Hz
I'm a little confused about the difference between #2 and #4 mean.
My understanding was that the max frequency output from the Fast Fourier Transform is a resolution and determines the smallest change in frequency that can be detected.
I'm quite unsure what FFT Frequency Resolution is...
Would someone kindly explain these terms in very simple words (mathematical derivations not required)?
Thanks :)