digital parametric equalizing (acoustics) (DPE)

Digital Parametric Equalizing(DPE) are steep-edged IIR filters of second order with adjustable cut-off frequencies and attenuation values. They are filters in the audio range with which unwanted room resonance frequencies can be attenuated and the frequency radiation of loudspeakers can be smoothed. The Digital Parametric Equalizing achieves a sound improvement.