| 摘要 |
<p>A car reverse alarm is provided. The car reverse alarm includes a power source processing unit (10), an audio signal generating unit (20), an audio signal filter unit (30), an audio signal amplification unit (40), a voice speaker (50), and a voice speaker protection unit (60). The power source processing unit (10) receives an input power source (Vin) for generating a first power source (V1) and a second power source (V2). The audio signal generating unit (20) receives a backing signal, and then generates an audio signal according to the received backing signal, and transmits the audio signal to the audio signal filter unit (30). The audio signal filter unit (30) receives the audio signal, and then generates an audio signal filtering signal. The audio signal amplification unit (40) then generates an audio driving signal and transmits the audio driving signal to the voice speaker (50). The voice speaker (50) generates an alert voice and is protected by the voice speaker protection unit (60).</p> |
