| 摘要 |
<p>A method is disclosed for determining when a frequency-modulated expected information signal resides at a predetermined channel. The method is based on determining a value (17) based on the frequency deviation of the received signal (15) and then comparing the value (18) with a threshold (19) based on the expected information signal. The method is particularly well-suited for use as a squelch detector in digital FM radios.</p> |
