实现了对10个数字音的识别，基于kaiser窗的双谱线插值FFT谐波分析，毕业设计有用，结合PCA的尺度不变特征变换(SIFT)算法，MIMO OFDM matlab仿真。- To achieve the recognition of 10 digital sound, Dual-line interpolation FFT harmonic analysis kaiser windows, Graduation useful Combined with PCA scale invariant feature transform (SIFT) algorithm, MIMO OFDM matlab simulation.