| 摘要 |
<p>An apparatus for noise active control comprising: a main input (10) for receiving a main signal (11) representative of the acoustic noise present in a predetermined area; a digital signal processor DSP (20) operatively associated with at least said main input (10) for generating, as a function of said main signal (11), a secondary signal (12) for erasure (removal) of said noise; an output (30) operatively associated with said DSP (20) for sending said secondary signal (12) to an electroacoustic transducer (2) to convert said secondary signal (12) into an acoustic signal for removal of said noise. The apparatus (1) further comprises an electrically rewritable and non-volatile memory E-EPROM (50) operatively associated with said DSP (20) for storing an operating program and one or more operating parameters depending on which said secondary signal (12) is generated.</p> |
