信号系统常用程序.卷积/傅立叶级数/频谱分析/调制解调等-signal system commonly used procedures. Convolution / Fourier Series / spectrum analysis / modem, etc. 下载
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本系统可以完成数字图像的离散傅立叶变换频谱图，中值滤波，腐蚀，膨胀，图像增强，二值化以及二值图像中物体的计数-the system can complete digital images of discrete Fourier transform spectrum, the median filter, corrosion, expansion, image enhancement, two and two binary value objects in the image count 下载
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pade近似法频谱分析，显著提高快速傅立叶变换法的频谱分辨率。- 下载
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信号傅立叶变换的幅度图和频谱图的示例 信号傅立叶变换的幅度图和频谱图的示例-signal Fourier transform spectrum range map and the map of the signal sample rate Fourier Transform map and the map of the sample spectrum 下载
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对信号进行傅立叶变换的程序，可以进行频谱，功率谱变换。-right signals Fourier transform procedure could spectrum, power spectrum transformation. 下载
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快速傅立叶算法c程序，改变参数可以对2的n次方长度的有限序列进行频谱分析。- 下载
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1．通过实验加深对快速傅立叶变换（FFT）基本原理的理解。 2．了解FFT点数与频谱分辨率的关系，以及两种加长序列FFT与原序列FFT的关系。 离散傅里叶变换（DFT）和卷积是信号处理中两个最基本也是最常用的运算，它们涉及到信号与系统的分析与综合这一广泛的信号处理领域。实际上卷积与DFT之间有着互通的联系：卷积可化为DFT来实现，其它的许多算法，如相关、滤波和谱估计等都可化为DFT来实现，DFT也可化为卷积来实现。-1. Deepen the experimental fast Fourier transform (FFT) the basic tenets of understanding. 2. Understand the FFT spectrum and points of the resolution, and two extended sequence with the original FFT FFT relations. Discrete Fourier Transform (DFT) and the convolution of two signal processing is the most commonly used basic arithmetic, they relate to the signal and system analysis and synthesis of the wide range of signal processing field. DFT actually convolution and interoperability between contact : DFT into convolution can be achieved in many other algorithms, If relevant, filtering and spectral estimation could be achieved as DFT, DFT into convolution can be achieved. 下载
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加窗离散傅立叶变换，用DFT对离散信号进行谱分析，通过选用不同的加窗函数来抑制信号截断造成的频谱泄漏-windowed discrete Fourier transform, DFT right discrete signal spectral analysis, the increase in the alternative window function to curb the disconnect signal leakage spectrum 下载
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x=2*sin(4*pi*t)+5*cos(8*pi*t) 对其进行快速傅立叶变换 加入高斯噪声 再进行频谱分析-x = 2 * sin (4 * pi * t) 5 * cos (8 * pi * t) makes its rapid Fourier transform to re-Gaussian noise spectral analysis 下载
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Goertzel算法是DTMF信号检测的核心，它利用二极点的IIR滤波器计算离散傅立叶变换值，快速有效的提取输入信号的频谱信息。-Goertzel algorithm algorithm is DTMF signal detection at the core, It uses two poles of the IIR filter calculating the discrete Fourier transform value rapid and effective extraction of the input signal spectrum of information. 下载
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