MP3编码源码，硬件为8731及兼容产品，个人认为学习MP3编码原理比较有意义。-MP3 source code and hardware for 8731 and compatible products, personal learning that the MP3 coding theory more meaningful.

MP3编码源码，硬件为8731及兼容产品，个人认为学习MP3编码原理比较有意义。-MP3 source code and hardware for 8731 and compatible products, personal learning that the MP3 coding theory more meaningful.

通过de2板上的wm8731，42阶音量可调，mic和dac同时输出。-By de2 board wm8731, 42 stage adjustable volume, mic and dac output simultaneously.

文件1：复数的表达与计算；文件2：用matlab计算∛ (-8)，并用图形表示；文件3：用符号计算研究方程sin(3)uz^2+vz+3w-a5=0的解；文件4：求阿基米德螺线r=a*θ,(a>0)在θ=0到φ间的曲线长度函数，并求a=1,φ=2п间的曲线长度；文件五：著名的Givens旋转G=[■(cos t&-sin t@sin t&cos t)]对矩阵A=[■(√3/2&1/2@1/2&√3/2)]的旋转作用。-f