通过声卡采集信号，进行频谱分析，实时绘制出频谱分析图，并可以把分析数据存到数据库中。-Collected through the sound signals, spectral analysis, real-time spectrum analysis chart to map out and analyze the data can be stored in the database.

对轴承振动信号进行滤波和包络频谱分析，可通过包络谱发现轴承故障，也可用于其他故障诊断的研究，程序已调试通过-Bearing vibration signal filtering and envelope spectrum analysis, bearing failure can be found through the envelope spectrum can also be used to study other troubleshooting procedures have been d

包含有希尔伯特黄变换的主程序、边际谱的计算方法、并绘制了仿真信号的FFT频谱和功率谱，并调用emd分析方法，绘制了emd分解结果，以及瞬时包络和瞬时频率图，还有Hilbert-Huang谱和Hilbert边际谱- Including the main program of the Hilbert Huang transform, marginal spectrum calculation method, and draw the simulation signal FFT spectrum

相控阵天线的方向图（切比雪夫加权），多抽样率信号处理，对信号进行频谱分析及滤波。- Phased array antenna pattern (Chebyshev weights), Multirate signal processing, The signal spectral analysis and filtering.

在matlab环境中自动识别连通区域的大小,最小均方误差等算法的MSE的计算,对信号进行频谱分析及滤波。- Automatic identification in the matlab environment the size of the connected area, Minimum mean square error MSE calculation algorithm, The signal spectral analysis and filtering.