| 摘要 |
<p>In pressure-free condition, music is produced automatically by resonance of free matter. In this instance of freedom, sound is produced and propagated. If a finger is softly placed on an excited resonating bell, the sound of the bell stops. In the field of electrical sound reproduction, the sound emitters such as loudspeaker diaphragms, are always excited by the following note and hardly have time to resonate. As opposed to musical instruments which require an escapement, the field of electrical sound reproduction disregards this. The present method aims at creating systematic micro-interruptions of the electric audio signal, thereby providing freedom to the diaphragm and an unhampered sound quality. Said micro-interruptions thus constitute the systematic acoustic artificial escapement of electroacoustic systems. Said micro-interruptions depend on the inertia of the transducer, but must be implemented at speeds of at least two to three times of the sound frequency activity of the transducer or of the acoustic enclosure. An adjustable electronic clock regularly monitors a unipolar or bipolar switch, in the form of an electric contact such as a transistor, which interrupts the electric system powering the enclosure. The diaphragms become actively resonant in normal mode, through the acoustic escapement which is useful to the whole acoustic and audio-visual world. Said escapement decreases the phenomenon of acoustic compression which causes deafness, and is therefore useful for the medical field.</p> |
