Patent ID: 7068800

Claim:
A speaker apparatus comprising: a transducer for converting an input electric signal into mechanical vibration; and a single diaphragm for converting the mechanical vibration into a sound signal; wherein said single diaphragm is provided with a plurality of the transducers, and the single diaphragm is provided with a plurality of independent signal control points corresponding to the respective transducers, and wherein a sound signal processing portion that is able to individually control the input electric signal to the respective transducers is installed, and an electric signal including a sound signal component for outputting a signal at the signal control point corresponding to the respective transducers and a sound interference canceling signal component for canceling, at the signal control point, an interference with the transducers serving as the other signal control points is provided, thereby making it possible to stereophonically reproduce a plurality of channels by the single diaphragm.