Loudspeaker equalization based on multi-location observation with reliable time-frequency region selection and its evaluation using sound propagation measurement
Masanori Morise, Hideki Kawahara · 2004
A new loudspeaker equalization method that is robust against lis-tening environment and listener’s movement is proposed based on a new criteria for making use of multi location measurement and re-liable time-frequency region selection. The time-frequency region selection is implemented by low-pass filtering operation on an non-linearly stretched time axis for computational efficiency. The pro-posed criteria for equalization is based on average energy distribu-tion and average temporal spread of equalized multiple responses. A high-density measurement of wave propagation radiated from the loudspeaker under study was used for evaluating and demonstrating effectiveness of the proposed method. 1.