| 摘要 |
PURPOSE: An apparatus for generating an acoustic condensation and rarefaction wave using an airtight space is provided to effectively convert a variation pattern in acoustic current, inputted to a transducer, into a condensation and rarefaction wave. CONSTITUTION: As a couple of transducers(1,2) are installed opposite to each other in the inside of a cabinet(A) so that a space(8) can be provided in the middle, a condensation and rarefaction wave conversion engine part(B) is formed. Each of the transducers(1,2) is composed of a magnetic yoke(3), a vibration plate(4), a permanent magnet(5), a moving coil(6), and a frame(7). An output vent(9), installed in the center of a side of the cabinet(A), is connected with a waveguide(10). The waveguide(10) is connected to a speech-receiving case(11). When a user inserts the speech-receiving case(11) into his ear, a sound is generated from a sound equipment and a converter. Immediately, a condensation and rarefaction wave is induced and inputted to the waveguide(10).
|
