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Display FFT of an audio signal

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  • V Offline
    V Offline
    vanessa
    wrote on last edited by
    #1

    Hello

    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

    Thanks!

    jsulmJ 1 Reply Last reply
    0
    • V vanessa

      Hello

      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

      Thanks!

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by jsulm
      #2

      @vanessa said in Display FFT of an audio signal:

      but doesn't work to me

      Hi!
      What exactly does not work?
      You can use a moving bar, or you could implement your own widget where you draw everything by yourself.

      https://forum.qt.io/topic/113070/qt-code-of-conduct

      1 Reply Last reply
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