一种智能门锁的新型音频处理电路

Abstract

本实用新型公开了一种智能门锁的新型音频处理电路，包括第一音频预处理电路、第二音频预处理电路、音频处理电路、外锁功放电路及内锁功放电路；第一音频预处理电路的输出端与音频处理电路的输入端电连接，用于对外锁音频进行预处理，第二音频预处理电路的输出端与音频处理电路的输入端电连接，用于对内锁音频进行预处理；音频处理电路的输出端与外锁功放电路电连接，用于将处理完成的外锁音频传输到外锁功放电路；音频处理电路的输出端与内锁功放电路电连接，用于将处理完成的内锁音频传输到内锁功放电路。实现了智能门锁内外锁声音的独立播放，左右声道独立输出和功放驱动，减少了声音干扰，为用户带来更好的听觉体验。

Claims

1. A novel audio processing circuit for smart door lock characterized in that, include: First audio preprocessing circuit; Second audio preprocessing circuit; Audio processing circuitry; External lock-in power amplifier circuit; Internal lock-in power amplifier circuit; The output terminal of the first audio preprocessing circuit is electrically connected to the input terminal of the audio processing circuit, and is used to preprocess external lock audio. The output terminal of the second audio preprocessing circuit is electrically connected to the input terminal of the audio processing circuit, and is used to preprocess internal lock audio. The output terminal of the audio processing circuit is electrically connected to the external lock power amplifier circuit, and is used to transmit the processed external lock audio to the external lock power amplifier circuit. The output terminal of the audio processing circuit is electrically connected to the internal lock power amplifier circuit, and is used to transmit the processed internal lock audio to the internal lock power amplifier circuit.

2. The novel audio processing circuit of the smart door lock according to claim 1, characterized in that, The novel audio processing circuit of the smart door lock also includes: External speaker lock; Internally locked speaker; The external lock speaker and the internal lock speaker are electrically connected to the output terminals of the external lock power amplifier circuit and the internal lock power amplifier circuit, respectively.

3. The novel audio processing circuit of the smart door lock as claimed in claim 1, wherein, The first audio preprocessing circuit includes: First preprocessing chip; The first preprocessing chip includes: First communication pin and second communication pin; The first preprocessing chip is connected to the audio processing circuit via the first communication pin and the second communication pin.

4. The novel audio processing circuit of the smart door lock according to claim 1, wherein, The second audio preprocessing circuit includes: Second preprocessing chip; The second preprocessing chip includes: The third communication pin, the fourth communication pin, and the fifth communication pin; The second preprocessing chip is connected to the audio processing circuit via the third, fourth and fifth communication pins.

5. The novel audio processing circuit of the smart door lock according to claim 1, wherein, The audio processing circuit transmits the processed external lock audio to the external lock power amplifier circuit through the left channel output pin. The audio processing circuit transmits the processed internal lock audio to the internal lock power amplifier circuit through the right channel output pin.

6. The novel audio processing circuit of the smart door lock according to claim 5, characterized in that, The audio processing circuit includes: Audio processing chip; First audio output circuit; Second audio output circuit; The first audio output circuit is electrically connected to the audio processing chip and is used to output the processed external lock audio signal; The second audio output circuit is electrically connected to the audio processing chip and is used to output the processed internal lock audio signal.

7. The novel audio processing circuit of the smart door lock according to claim 6, characterized in that, The first audio output circuit includes: A first capacitor, a first resistor, and a second capacitor; The first end of the first capacitor is electrically connected to the left channel output pin of the audio processing chip, the second end of the first capacitor is electrically connected to the first end of the first resistor, the second end of the first resistor is electrically connected to the first end of the second capacitor and the first audio output terminal, and the second end of the second capacitor is grounded.

8. The novel audio processing circuit of the smart door lock according to claim 6, characterized in that, The second audio output circuit includes: The third capacitor, the second resistor, and the fourth capacitor; The first end of the third capacitor is electrically connected to the right channel output pin of the audio processing chip, the second end of the third capacitor is electrically connected to the first end of the second resistor, the second end of the second resistor is electrically connected to the first end of the fourth capacitor and the second audio output terminal, and the second end of the fourth capacitor is grounded.

9. The novel audio processing circuit for the smart door lock according to claim 1, characterized in that, The external lock-up power amplifier circuit includes: First audio input circuit, external power amplifier processing chip and first power amplifier output circuit; The output terminal of the first audio input circuit is electrically connected to the input terminal of the external lock power amplifier processing chip, and the output terminal of the external lock power amplifier processing chip is electrically connected to the first power amplifier output circuit.

10. The novel audio processing circuit of the smart door lock according to claim 1, characterized in that, The internal power amplifier circuit includes: Second audio input circuit, internal power amplifier processing chip and second power amplifier output circuit; The output terminal of the second audio input circuit is electrically connected to the input terminal of the internal lock power amplifier processing chip, and the output terminal of the internal lock power amplifier processing chip is electrically connected to the second power amplifier output circuit.

Images