基于单片机的智能乐器校音器的设计

Design of Intelligent Musical Instruments Sound Corrector based on MCU

为了提高乐器调音、定音的速度和准确度,设计了便携式电子校音器.文中介绍了基于单片机的电子乐器校音器的设计方法,主要阐述了信号采集、放大和显示电路的构成和软件设计思路.利用单片机的数据处理功能,实现对乐器所发音阶频率的智能测量和基准音频比较,通过LCD12864显示相应的频率值和音分差,从而为人工调谐提供依据.研究表明,装置具有测量准确、方便易用等优点,有很好的推广价值.

The electronic tuner was designed in order to improve the rate and accuracy of tuning and pitch. This paper described the design method of electronic musical instrument tuner based on SCM and introduced the structure of signal acquisition, amplification, display circuit and software design ideas. The intelligent measurement of musical instrument frequency and comparison to reference frequency could be achieved by using the data processing of SCM. The frequency values and cents difference which was displayed by LCD12864 provided the basis for artificial tuning. The device had such advantages as measurement accuracy, using conveniently etc, it would be worth promoting.