摘要
利用STM32单片机内部的DSP库功能,将外部输入的音乐信号放大后再送入单片机内部的A/D转换器,运用STM32内部DSP库功能进行FFT运算,采用中断扫描技术,将音乐信号的频谱在32X64全彩点阵屏进行显示,能对音乐信号的频谱进行简单的分析,实现多种随音乐节奏舞动的视觉效果。
Use of STM32 MCU internal DSP library function,the music of external input signal amplification and then sent into single chip microcomputer internal A/D converter,use STM32 internal DSP library functions for FFT arithmetic,using interrupt scanning technology,the music signal spectrum in 32 x64 lattice screen for display,full-color to simple music signal spectrum analysis,realize the visual effect of A variety of dance with the music rhythm.
作者
谢志平
XIE Zhi-ping(Guangdong technician college,huizhou 516100,China)
出处
《软件》
2020年第4期200-202,228,共4页
Software
关键词
单片机
DSP库
FFT
中断扫描技术
Single chip microcomputer
DSP library
FFT
Interrupt scanning technique
