|
 Kyma Forum
 Tips & Techniques
 Formulae to calculate FFT resolution?
|
| next newest topic | next oldest topic |
| Author | Topic: Formulae to calculate FFT resolution? |
|
KX Member |
posted 03 January 2007 06:08
 
Happy new year everyone! 2007 began on a very good note. I just managed a small Kyma setup in my bedroom; no more unproductive insomnias!! What is the right formula to calculate the freq resolution of a FFT? What I have in mind is SR/FFT lenght/2 but I'm sure I'm wrong...as I'm always wrong even with the simpliest maths! Thanks Karl IP: Logged |
|
tuscland Member |
posted 03 January 2007 06:52
Mmmh, I may be wrong, but I think it is just Fs/N, meaning: "Sample Rate" / "FFT Size"
IP: Logged |
|
KX Member |
posted 03 January 2007 07:28
I divided by 2 because of nyquist... IP: Logged |
|
SSC Administrator |
posted 03 January 2007 10:00
SampleRate / FFTLength You are correct about the half sample rate. The FFT produces a spectrum that has both positive and negative frequencies (which are symmetrical, in a way), so only half of the points are unique. But those points describe the spectrum from DC to the half sample rate. This means you have (SampleRate / 2) / (FFTLength / 2) which is the same as the first line here. IP: Logged |
All times are CT (US) | next newest topic | next oldest topic |
  |
|
Contact Us | Symbolic Sound Home
This forum is provided solely for the support and edification of the customers of Symbolic Sound Corporation.
Ultimate Bulletin Board 5.45c