HARMONIC AMPLIFIER AND CORRESPONDING ELECTROACOUSTIC TRANSDUCER

摘要

In the field of sound reproduction it is customary to use diaphragms excited by magnetic motors or tape electrostatic systems. All these products have important volumes being actuated to produce sound. Inversely, sound is an impact between air particles which are infinitely small in volume which provide them with high sound propagation velocity. The invention concerns a method using low level electromagnetism which relies on ambient air particles, thereby generating a novel magnetic field. Said method is characterised in that it uses an apparatus consisting of at least an electric wire winding (1) coiled on a flexible polymer support (2), with an impedance of 8 ohms. Said apparatus is coupled with an audio electric signal of an acoustic chamber or an acoustic supply. Said method and apparatus can be used on all audio, audio-visual systems and any communication mode such as telephone, radio as well as in the medical field for the auditory comfort of hard-of-hearing persons.