Toa Coporation

Toshimitsu Suetsugu

Satoshi Miyata

To provide a speaker device that can form a substantially uniform sound field over a range from a long distance to a short distance without significantly increasing a calculation load. A plurality of FIR filterstoperform delay control of respective speakers so as to increase a delay time difference between adjacent speakerstoin a line array speakertoward one end of the line array speaker, and thereby over a wide range from a long distance to a short distance, a sound filedis formed. Also, by adding a common shift delay time Dc to filter coefficients for the FIR filtersto, the delay time difference between adjacent speakerstois made less than a sampling period of a sound signal to form a wide and uniform sound field

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Kobe, Japan

Toshimitsu Suetsugu