摘要
探讨了以TI公司的TMS320LF2407A数字信号处理器为硬件核心的钢琴调音仪的实现方法,并就钢琴发音及调音的原理、TMS320LF2407A芯片特点及功能、钢琴调音仪硬件的原理、软件编写思想及算法实现等进行了介绍。该钢琴调音仪实现了对钢琴信号的自动AD采集,对数据进行FFT以及滤波处理、频率测量以及频率值的LCD显示等。
The article expounds on the realization method of piano tuner with TI firm＇s TMS320LF2407A digital signal processor as the hardware core,and makes introductions to piano tuning principle,TMS320LF2407A chip feature and function,hardware principle of piano tuner,software programming idea and algorithm method.The piano tuner realizes functions such as automatic AD collection of piano signal,FFT and filtering treatment of data,frequency measurement,and LCD display of frequency value.
