Low-Frequency Modal Equalization of Loudspeaker-Room Responses
Matti Karjalainen, Aki Mäkivirta, Poju Antsalo, Vesa Välimäki · Journal of the Audio Engineering Society · 2001
a room with strong low-frequency modes the control of excessively long decays is problematic or impossible th conventional passive means. In this paper we present a systematic methodology for active modal equalizan able to correct the modal decay behavior of a loudspeaker-room system. Two methods of modal equalization e proposed. The first method modifies the primary sound such that modal decays are controlled. The second thod uses separate primary and secondary radiators and controls modal decays with sound fed into the seconry radiator. Case studies of the first method of implementation are presented.