"基于单片机的红外遥控扩音装置设计：实现远程音频控制"。

lopment of society and the advancement of technology, remote control technology is increasingly entering people's field of vision. These remote control technologies have brought a lot of convenience and enjoyment to people. Common remote control circuits in electronic devices generally include sound control, light control, radio remote control, and infrared remote control. The main function of the infrared remote control receiver is to convert the infrared light signal sent by the remote control transmitter into an electrical signal, amplify it, limit it, detect it, shape it, form a remote control command pulse, and output it to the remote control microprocessor. This design uses a universal infrared remote control, an integrated infrared receiver head receives the infrared signal and converts it into a level signal. The STC12C2052 microcontroller acts as the remote control microprocessor, processes the received signal, and completes the remote control command requirements. The role of the infrared remote control module is to receive the instructions transmitted by the remote control from the infrared receiver head and output the instructions to control the resistance value of the X9511 digital potentiometer to adjust the audio signal output voltage, thereby controlling the power amplifier signal gain to control the speaker output volume. In summary, this remote control amplifier device designed based on a microcontroller utilizes infrared remote control technology to provide users with a convenient and enjoyable experience in controlling speaker output volume. Through the processing of the microcontroller, the remote control commands are executed efficiently, making the device user-friendly and enhancing the overall user experience in audio amplification systems.