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3-Band Graphic Equalizer

How to Use

  • Drag the Bass, Mid, and Treble sliders to adjust gain (−12 to +12 dB)
  • The purple curve shows the combined EQ response across 20 Hz – 20 kHz
  • Click Flat to reset all bands to 0 dB

What to Observe

  • Bass shelf: boosts/cuts frequencies below ~200 Hz equally
  • Mid peak: a resonant bump centered at 1 kHz — notice how it affects nearby frequencies too
  • Treble shelf: rises toward high frequencies above ~4 kHz
  • Combining all three shapes the overall frequency response — this is exactly how audio equalizers work in practice