| 摘要 |
<p>A noise cancellation system is provided for a retail transaction station such as a fuel dispenser (100) to substantially reduce ambient noise in the vicinity of the dispenser or station, to enhance and facilitate customer interaction. The noise cancellation system comprises a detector (32) for detecting ambient noise and generating an ambient noise signal, a controller (34) receiving the ambient noise signal and responsively generating a noise cancelling signal, and a transducer (36) receiving the noise cancelling signal and generating a cancelling noise. <IMAGE></p> |
