Display FFT of an audio signal
I am implementing an audio equalizer in Qt. I already have all the bands and presets ready, but I'd like to show the FFT of the audio signal (like in most of the equalizers), but I don't know how to do it. I think I could use a moving bar for each band, but if you have any idea or could guide I'd be grateful
I already tried the "Spectrum Example", but doesn't work to me
but doesn't work to me
What exactly does not work?
You can use a moving bar, or you could implement your own widget where you draw everything by yourself.