Waterfall FFT

This program calculates the Waterfall FFT of a time history.

Description

This program calculates the one-sided, full amplitude Waterfall FFT of a time history. The time history must be in a two-column matrix format: Time(sec) & amplitude.

• Required Products: Signal Processing Toolbox
• MATLAB release: MATLAB 6.5.1 (R13SP1)

[Alwin Harms]

very useful.
Thanks a lot, that was exactly what i needed.

[Vishnuvenkatesh Dhage]

Code i need for Designing vibration spectrum analyser

[Jay Colgan]

Thank you very much. I needed something exactly like this where I could take my response data and get meaningful FFT results.

[Robert L]

Thanks! The code works well, taking the required inputs from the user. I used it to analyze experimental results from vibration testing and it worked beautifully.

[Tony Romey]

Neat but need Doc for newby.

To show FFT Waterfall of a .wav file try this:

SIZ=WAVREAD('mono.wav','size')
Y(:,2)=WAVREAD('mono.wav');
x = 1/44100; % Sample Rate
Y = zeros(SIZ(1),1); % Pre-Allocate Array
for k = 1:SIZ(1)
   Y(k) = x*k;
end
waterfall_FFT

(Sorry if not the best code, still learning :) )