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Description
In this paper, we propose a novel method of sound field reproduction
using a microphone array and loudspeaker array.
Our objective is to obtain the driving signal of a planar or
linear loudspeaker array only from the sound pressure distribution
acquired by the planar or linear microphone array.
In this study, we derive a formulation of the transform from
the received signals of the microphone array to the driving
signals of the loudspeaker array. The transform is achieved
as a mean of a filter in a spatio-temporal frequency domain.
Numerical simulation results are presented to compare the
proposed method with the method based on the conventional
least square algorithm. The reproduction accuracies were
found to be almost the same, however, the filter size and
amount of calculation required for the proposed method were
much smaller than those for the least square algorithm based
one.