23rd International AES Conference
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SESSION 3: INTERFACING LOUDSPEAKER AND ROOM


Statistical Analysis of an Automated In-Situ Frequency Response Optimisation Algorithm for Active Loudspeakers
Andrew Goldberg and Aki Mäkivirta
Genelec Oy, Iislami, Finland


This paper presents a novel method for automatically selecting the optimal in-situ acoustical frequency response of active loudspeakers within a discrete-valued set of responses offered by room response controls on active loudspeakers. An overview of optimization techniques is given, the resulting optimization algorithm described, as is the rationale of the room response controls for the active loudspeakers. The frequency response, calculated from the acquired impulse response, is used as the input for the optimization algorithm to select the most favorable combination of room response controls. Examples are given and the performance of the algorithm is analyzed and discussed. This system has been implemented and is currently in active use by specialists who set up and tune studios and listening rooms.