Method and apparatus to direct sound using an array of output transducers

The invention relates to steerable sound antenna and a realizing applications of each sources. The invention claims a method and device, for obtaining the input signal and repeatedly and front of the signal transmitting the corresponding output thereto is conducted to each duplication signal wherein duplication for modifying, so that the number of a need to the sound field. The sound field possibly comprising a reversing; the narrow beam or the analogue neutral point. In addition, the counter-sound shape of a directional; the sound field of making provided with is a zero (tranquil). Input signal duplication signal and further - producing amplitude values the manner is revised, solution of a filter, is provided to retard. A reflective or a resonant surface can be used to realize the surrounding sound effect; the microphone capable is arranged in front of the loudspeaker array, optical beam can be used to distinguish the current focal position point; when the same device and more than one input signal, the limit device can be used for ensuring consistency between datum to the reduced clipping or a bracket, and beam direct concept can be used to realize input zero or a beam a microphone input of relay array is in. In addition, the sound field shaping information of with the audio signals of flowing by broadcast.