| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an array speaker driving device which can efficiently supply power to speakers with small number of components, and to provide an acoustic system. <P>SOLUTION: The array speaker driving device comprises: adders 11c-17c which determine the average of instantaneous values of a plurality of input signals 1n-8n corresponding to a plurality of speakers 1s-8s, respectively, and generate an average signal of the plurality of signals based on the average of instantaneous values; a phase inverter 10 which inverts the phase of the average signal generated by the adders 11c-17c; an amplifier 11 which amplifies the average signal having the phase inverted by the phase inverter 10; a plurality of adders 21c-28c which add the average signal having the inverted phase to the plurality of input signals 1n-8n, respectively; and a plurality of amplifiers 1a-8a which amplify the plurality of signals outputted from the plurality of adders 21c-28c. <P>COPYRIGHT: (C)2012,JPO&INPIT |
