The low-frequency response of loudspeakers can be affected severely when placed in typical living rooms. Past investigations have focused on reducing the energy at the room resonances but not reducing seat-to-seat variation. Other works, using multiple loudspeakers, nullify the room modes or eliminate them with acoustic interference but are restricted by loudspeaker position and room geometry. In this work the loudspeaker position is not restricted and both frequency and time-domain methods are explored. Nonlinear optimization has been computed to improve the time response of the speaker in the room. Results have shown significant reduction of seat-to-seat variation. The time-frequency analysis reveals elimination of room resonances; producing a clear tight bass response.
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