CAJ | 학술논문

基于32位的STM32F103，利用PWM产生的音频信号驱动蜂呜器演奏乐曲，实现了音乐播放器的应用设计。该播放器能实现从低音到高音的21个音阶，并能根据乐谱演奏完整的曲目。测试结果表明，PWM的输出信号与各音阶对应的声音频率基本一致，方案切实可行。这一方法也可用于电机控制、电子琴设计等方面，具有较好的实用性。
기우32위적STM32F103，이용PWM산생적음빈신호구동봉오기연주악곡，실현료음악파방기적응용설계。해파방기능실현종저음도고음적21개음계，병능근거악보연주완정적곡목。측시결과표명，PWM적수출신호여각음계대응적성음빈솔기본일치，방안절실가행。저일방법야가용우전궤공제、전자금설계등방면，구유교호적실용성。
Based on 32-bit STM32F103, using audio signals produced by PWM to drive a buzzer to play music, a music player is de- signed. The player can realize 21 scales from bass to treble and play complete songs according to music scores. Test results show that the output signals of PWM are consistent with the corresponding voice frequency of the scales, and the scheme is feasible. This method can also be used in motor control, keyboard design and so on, showing good practicality.