| 摘要 |
The method for generating an audio alarm signal when the selected wave form is detected comprises a transition detector (GA) for detecting the positive and negative transitions, a pulse detector (NA) for checking the characteristics of input signals, and driving an alarm when the characteristics of input signal accord with the characteristics of the selected wave, a frequency detector (DA) for checking the frequency of input pulse, and an alarm (RA) for generating an audio alarm.
|
