초록 ▼

A speaker device comprising an electrostatic emitter film which is responsive to an applied variable voltage to emit sonic output based on a desired sonic signal, used in combination with at least a first foam member having a forward face, an intermediate core section and a rear face. The forward fa

A speaker device comprising an electrostatic emitter film which is responsive to an applied variable voltage to emit sonic output based on a desired sonic signal, used in combination with at least a first foam member having a forward face, an intermediate core section and a rear face. The forward face is composed of a composition having sufficient stiffness to support the electrostatic film and includes conductive properties which enable application of a variable voltage to supply the desired sonic signal. The surface of the forward face includes small cavities having surrounding wall structure defining each cavity which terminates at contacting edges approximately coincident with the forward face of the foam member. The film is applied to the forward face of the foam member and biased in direct contact with the contacting edges of the forward face.

대표청구항 ▼

[ What is claimed is:] [1.]1. A speaker device comprising:an electrostatic emitter film which is responsive to an applied variable voltage to emit sonic output based on a desired sonic signal;a first foam member having a forward face, an intermediate core section, and a rear face which includes a no

[ What is claimed is:] [1.]1. A speaker device comprising:an electrostatic emitter film which is responsive to an applied variable voltage to emit sonic output based on a desired sonic signal;a first foam member having a forward face, an intermediate core section, and a rear face which includes a nonporous member for blocking unimpeded sound transmission;at least said forward face being composed of a composition having sufficient stiffness to support the electrostatic film and including conductive properties which enable application of a variable voltage to the forward face to supply the desired sonic signal;said forward face comprising a surface including small cavities having surrounding wall structure defining each cavity, said surrounding wall structure terminating at contacting edges approximately coincident with the forward face of the foam member;film application means for applying the electrostatic film to the forward face of the foam member;biasing means for biasing the film in direct contact with the contacting edges of the forward face such that the film is directly supported by the forward face; andcoupling means for coupling a signal source to the speaker device for supplying the variable voltage which includes a sonic signal.