摘要
利用32位STM32F103ARM和快速傅里叶变换(FFT)算法,实现了音乐频率幅度彩灯指示器的设计,该彩灯指示器可以指示不同的频率等级和音量等级。整个系统采用模块化设计,电路功能实现较好,只要接入信号就能测量,无需过多的人为操作。测试结果验证了FFT算法的准确性,进一步证实了所设计的系统对音频信号不同的频段等级和音量等级具有较好的指示效果,具有较好的实用性。
A colored light＇s indicator of mu,;ical frequency and amplitude is designed in this paper by using the 32-bit STM32F103 ARM single-chip and the fast Fourier transform （FFT） algorithm. This colored light＇s indicator can denote different classes of frequency and volume of musical signals. The whole system is used by modular design and behaves better function, once the input port receives signals, the system can work by itself without much human interference. Test results testify the accuracy of FFT algorithm, further, the designed system is also proved to behave better indicator effect for different frequency and volume classes of musical signals, and also behaves better practicality.
出处
《微型机与应用》
2011年第24期81-83,86,共4页
Microcomputer & Its Applications
基金
江苏省"青蓝工程"资助项目
苏州市职业大学创新团队资助项目(3100125)
