spectrum-estimation

代码说明：

说明：  对带有随机相位和随机噪声的线谱信号，实现周期图谱估计、多重信号分类（MUSIC）两种方法对频谱的估计。代码效率高，可扩展性好。(Of random noise with random phase and the line spectrum signal, spectrum estimation period, multiple signal classification (MUSIC) two methods of spectrum estimation. Code efficiency, good scalability.)