Design and implementation of Psychoacoustics Equalizer for Infotainment

This paper presents a novel dynamic equalization method for car inside. It deals with both design and implementation of a DSP based system for experimental validation of the proposed method. The major task of this method is the increase of sound reproduction quality. This is accomplished relying on the AQT analysis method, which allow an accurate characterization of the car acoustic response, including dynamics. A tool which performs automatic AQT computation was realized, then AQT parameters were used to synthesize an equalization filter. The filter was experimentally validated in a few commercial cars, using a DSP based board.