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有限长脉冲响应滤波器的频率采样设计,能够图形显示滤波器的幅频特性曲线-finite impulse response filter frequency sampling design, graphics filter to the amplitude and frequency characteristic curve
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Rotating shafts experience a an elliptical motion called whirl. It is important to decompose this motion into a forward and backward whil orbits. The current function makes use of two sensors to generate a bi-directional spectrogram. The method can b
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1.了解数字信号处理系统的一般构成;
2.掌握奈奎斯特抽样定理。
为方便实现,实验中更换了一种表现形式,即抽样频率固定(10KHz),通过改变输入模拟信号的频率来展示低通抽样定理。我们可以通过研究抽样频率和模拟信号最高频率分量的频率之间的关系,来验证低通抽样定理。-1. Understanding digital signal processing system of the general composition; 2. Master Nyquist Sampling Theorem.
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设采样频率为1Hz,对于淹没在复高斯白噪声中的信噪比为 的两个复LFM信号,采用子带带宽为0.1Hz的升余弦滤波器,共9个子带滤波器构成的滤波器组,时间窗为窗长为256的矩形窗,进行仿真-based sampling frequency of 1Hz. For drowned in the complex Gaussian white noise to the signal-to-noise ratio of 2 Minute LFM, using sub-band bandwidth of 0
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在采样频率为1Hz,数据长度为1000点和信噪比为10dB的条件下,进行PPS信号的DPT迭代检测-the sampling frequency of 1Hz, data length of 1,000 points and 10dB signal-to-noise ratio for the conditions, PPS signal for the detection of DPT iterative
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(1) 熟悉连续信号经理想采样前后的频谱变化关系,加深对时域采样定理的理解.
(2) 熟悉时域离散系统的时域特性
(3) 利用卷积方法观察分析系统的时域特性.
(4) 掌握序列傅立叶变换的计算机实现方法,利用序列的傅立叶变换对连续信号,离散信号及系统响应进行频域分析.
-(1) familiar with the continuous signal to the manager before and after the sampling of the spectrum chang
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在窗体中添加一个image控件来显示matlab绘制的时域和频域波形图形。添加2个text控件用来输入采样点数和采样频率-in the form to add an image controls to show Matlab mapping in time domain and frequency domain waveform graphics. Add two controls for text input sampling frequency and sampling points
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通过对话框输入信号频率,采样点等信息,实现对信号的一维fft变换-Through the dialog box input signal frequency, sampling points, such as information, the realization of signal transform one-dimensional fft
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MATLAB实现FIR数字滤波器的仿真 可以自己设定采样频率和滤波器种类-MATLAB realization of FIR digital filter can be set for the simulation sampling frequency and filter type
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本音频信号分析仪由32位MCU为主控制器,通过AD转换,对音频信号进行采样,把连续信号离散化,然后通过FFT快速傅氏变换运算,在时域和频域对音频信号各个频率分量以及功率等指标进行分析和处理,然后通过高分辨率的LCD对信号的频谱进行显示。该系统能够精确测量的音频信号频率范围为20Hz-10KHz,其幅度范围为5mVpp-5Vpp,分辨力分为20Hz和100Hz两档。测量功率精确度高达1 ,并且能够准确的测量周期信号的周期,是理想的音频信号分析仪的解决方案。-The audio signal ana
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通信系统的仿真,使用频率采样法做的,设计傅立叶变换等功能,很强大-Simulation of communication systems, using the frequency sampling method to do the design Fourier transform functions, it is powerful
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