取得声卡数据，并以条柱输出！可用于音乐频谱制作-Access to sound data, and to be pole output!

读取硬盘上的音频文件，进行傅里叶分析，显示音乐频谱，同时输出声音。-Read audio files on your hard disk, Fourier analysis, and display the spectrum of music, while the output sound.

基于AVR的LCD1602显示音乐频谱,采用通用的快速傅里叶变换C语言函数，对音频采样变化后输出至点阵屏中形成绚丽的频谱效果。-AVR based LCD1602 display musical spectrum, using a common C language function fast Fourier transform, to change the audio output to the sample matrix scree

单片机产生音乐源码及上频谱转码工具。 单片机通过控制引脚的高低电平来产生频率，接着再控制输出频率时间就可产生美妙的音乐。-SCM source code and produce music spectrum transcoding tool. Microcontroller to generate a frequency by controlling the pin high and low, and then again t