(under subclass 150) Device or system for converting (a) sound waves in the form of traveling stresses in an elastic medium (e.g., air, etc.) into an electric signal or (b) an
electric signal into sound waves in the form of traveling stresses in an elastic medium (e.g., air, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
201, for antenna.
202, for electric communication system containing transmitter or receiver of pulse, digital, or electromagnetic radio, television, or radar wave form.
SEE OR SEARCH CLASS
181, Acoustics, particularly
167, for diaphragms containing low temperature superconducting material. 367, Communications, Electrical: Acoustic Wave Systems and Devices,
140+, for signal transducers that may be active solid-state devices, and including support structures, diaphragm, and pressure compensation means.
381, Electrical Audio Signal Processing Systems and Devices, particularly
396+, for electromagnetic electroacoustic transducers containing low temperature superconducting material.
