User Position-Based Loudspeaker Correction

In our work, we present and study a novel loudspeaker correction system. This correction system uses the location of the user to determine the calibration parameters. By correcting for the loudspeaker’s response at multiple locations and changing the calibration in real-time based on the user’s location, we expect a less colored frequency response compared to no applied calibration and static calibration methods. The developed method, User Position- Based Loudspeaker Correction (UC), produces a flatter frequency response than that of no applied calibration: for example, in one of the measurement conditions the averages of the ranges of the frequency response went from 10.3 dB in the non-corrected setting to 4.7 dB in the UC setting. Further, it is shown to outperform a static method of correcting for the frequency response of each point in space by using calibration derived from measurements from a predetermined listening position. Finally, by interpolating the EQ gains for the calibration from a set of measurements for the suggested correction method, the system’s resolution could be increased with the resulting calibration still outperforming the static correction method.