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yuyin
- 进入实验界面后,按“输入语音信号”按钮,录入语音信号的数据。对数据进行频谱分析,给出语音信号的波形图和频谱图。设置系统的截止频率,选择给定的系统类型,建立系统函数,并画出系统的频响图。 5. 语音信号频谱与滤波器频响相乘(即对语音信号进行高、低通滤波),得到输出信号的频谱,将所得结果经过傅里叶反变换函数变换为时域信号,绘出处理后信号的波形图,并分别存档。-Into the experimental interface, press " input speech signal"
Fresnel-hologram
- 目前生成全息图主要有傅里叶和菲涅尔变换,此代码为利用菲涅尔变换将二维图片生成菲涅尔全息图,以达到图像加密的功能。-The current generated hologram mainly Fu Liye and Finel transform, the code for the use of Finel transform two-dimensional images generated Finel hologram, in order to achieve the function of i
Pumping-unit-diagnosis
- 抽油机诊断技术,等步长有限差分解的程序和结果,傅里叶级数变换求解结果和程序,示功图绘制。-Pumping unit diagnostic techniques, such as step finite difference program and results of decomposition, the Fourier series transformation results and procedures, indicator diagram drawing.