Patent ID: 7912229

Claim:
A speaker array system comprising: N driving circuits, N being an integer equal to or greater than 4; a plurality of N speakers arranged in an array, each of the N speakers making up plural pairs of speakers, each pair of speakers comprising a first speaker and a second speaker, each first speaker being positioned adjacent to the second speaker in the pairs of speakers, each of the N speakers having two terminals, one of the two terminals being coupled to a corresponding one of the N driving circuits and the other of the two terminals being connected to together so that N+1 wirings are utilized in the speaker array system, wherein in each pair of speakers, the one terminals coupled to the driving circuits have opposite polarity, and the first speaker receives a first driving signal at the one terminal from the corresponding one of the N driving circuits and outputs a first current signal at the other terminal, and the second speaker receives a second driving signal, having an inverse phase and a predetermined delay relative to the first driving signal, at the one terminal from the corresponding one of the N driving circuits and outputs a second current signal at the other terminal so that a magnitude of a sum of the first current signal and the second current signal is determined by a magnitude of the predetermined delay, wherein the first driving signal received by the first speaker and the second driving signal received by the second speaker are generated from one signal.