基于AT89C51单片机简易音乐播放器设计与研究

Design and research of simple music player based on AT89C51 single chip machine

为了适应智慧家居应用的需求,文章设计了一款基于AT89C51单片机的音乐播放器。首先在理论上分析了音乐播放器的设计原理,即通过单片机的定时/中断系统实现音频播放;其次,利用定时器产生不同音频,借助蜂鸣器转发放大信号,以实现不同音调的播放;最后,在软件设计的基础上加入中断系统调节以实现音调的时长变化。

In order to meet the needs of intelligent home applications, this paper designed an AT89C51 micro controller-based music player. This paper first makes a theoretical analysis of design principle, which is to achieve audio playback through the micro controller timer/interrupt system; then, using the timer to produce different audio and amplify signal by means of a buzzer to play different tones; finally, the interrupt system is added to adjust the system to achieve the change of the length of pitch.