| 摘要 |
<p>A mute trigger apparatus includes a transducer, a database, a processor, a comparator and a mute switch. The transducer is responsive to acoustic wave energy to develop a first electrical signal commensurate with said acoustic wave energy. The database contains stored signal data. The processor is responsive to the first electrical signal to develop dynamic signal data. The comparator is responsive to each of the stored signal data and the dynamic signal data to develop a second electrical signal in the event the stored signal data and the dynamic signal data are substantially equivalent. The mute switch has an off state and an on state. The mute switch is normally biased in its off state and transitionable to its on state in response to the second electrical signal.</p> |
