Creating freqeuncy bars
Hi,
I'm trying to implement frequency bars (the ones that you would see in winamp or media player) where the bars change as an audio file progresses.
e.g.
I抦 starting with .wav files to keep things simple and so far I抳e created an application that reads a wav file and plays it and I can extract the frames / bytes for each sample.
I抳e been reading allot about FFT (fast Fourier transforms) DFT etc.. and understand them to a point.
The difficulty I抦 having is understanding the variables in the equations in relation to the data / samples I have and what I get after performing the transform.
The information I would like to have is the amplitude / power of each frequency bar so that I can display graphically and manipulate as the sound / song progresses
Can any one help my head is fried!!!
Thanks and kind rgds
