Description: 2048点实序列fft 采用优化地方法节省存储空间和运算时间。包括2048点实序列fft，信号幅度谱分析和排序。本程序用于基于tms320lf2407的波形采集与分析上，能够精确分析信号的幅度和频率分量。-2048-point sequence is optimized to fft method used to save storage space and computing time. Including the 2048-point real sequence fft, signal amplitude spectrum analysis and sequencing. This procedure for tms320lf2407 based on the waveform acquisition and analysis, to accurately analyze the magnitude and frequency of signal components. Platform: |
Size: 8192 |
Author:熊涛 |
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Description: 模拟单边带调幅及解调
基本要求：
产生300 ~ 3400Hz的调制信号，画出时域波形及频谱；
产生载波信号，频率自定义，画出时域波形及频谱；
产生加性高斯白噪声，画出时域波形及频谱；
单边调幅，画出叠加噪声后的调制信号和已调信号的波形及频谱；
设计滤波器，画出幅频响应图；
解调，画出解调后的信号时域波形及频谱，并对比分析。
-Simulation of single sideband amplitude modulation and demodulation basic requirements: 300 ~ 3400Hz generate the modulation signal, draw time-domain waveform and frequency spectrum generated carrier signal, the frequency of self-definition, draw time-domain waveform and frequency spectrum have a high additive Adams white noise, draw time-domain waveform and frequency spectrum unilateralism AM, draw superimposed noise signal and the modulation transfer signal waveform and spectrum design filters, amplitude-frequency response of draw demodulation, After demodulation of the signal to draw time-domain waveform and frequency spectrum, and comparative analysis. Platform: |
Size: 66560 |
Author:严雪峰 |
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Description: dsp算法40例,包括fft、滤波器、谱运算等
1． 将模拟滤波器转变为数字滤波器。
2． 由得到幅频响应 。
3． 用Burg算法求AR模型的参数。
4． 由AR模型参数得到功率谱。
5． 用Levinson算法求解Yule-Walker方程以得到 阶AR模型的参数 。
6． 实现双线性Z变换。
7． 设计巴特沃斯模拟低通滤波器，求出转移函数 。
8． 设计切比雪夫I型模拟低通滤波器，求出转移函数 。
9． 直接由定义求 点复序列 的DFT 。
10．利用经典的Cooley-Tukey基2算法求复序列 的DFT 。
-dsp algorithms 40 cases, including the fft, filter, spectrum operations, etc.
1. Analog filters into digital filters.
2. Amplitude-frequency response by obtained.
3. Burg algorithm for AR model with the parameters of demand.
4. AR model parameters obtained from the power spectrum.
5. Levinson algorithm using Yule-Walker equations to get the first-order AR model
parameters.
6. The bilinear Z transform to achieve.
7. Design of Butterworth analog low-pass filter, find the transfer function.
8. Design of Chebyshev-I analog low-pass filter, find the transfer function.
9. Directly from the definition of point complex sequence of DFT.
10. The use of the classic Cooley-Tukey radix-2 algorithm is seeking re-sequence of DFT.
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Size: 59392 |
Author:jack |
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Description: 这是个带通信号仿真调制代码，画出带通信号X(t)的幅度谱，带通信号X(t)的包络波形等。-This is a simulation of bandpass modulation code, and draw the bandpass signal X (t) the amplitude spectrum, bandpass signal X (t) the envelope waveform. Platform: |
Size: 1024 |
Author:李劲菊 |
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Description: matlab 数字图像信号的频域分析及仿真
将二维数字图像进行傅立叶频域分析，并且做了图像幅度谱重建和相位谱重建，通过这个例子大家可以明白相位比振幅更重要。-matlab digital image signals in frequency domain analysis and simulation of two-dimensional digital image Fourier frequency domain analysis, and has done a reconstruction of the image amplitude spectrum and phase spectrum reconstruction, by this example we can understand the phase is more important than the amplitude. Platform: |
Size: 791552 |
Author: 自由色彩 |
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Description: 主要实现c8051下fft算法，包括幅值谱，频率谱等以及不同窗函数的实现。-C8051 major achievement under the fft algorithm, including the amplitude spectrum, frequency spectrum, etc., as well as the realization of different window functions. Platform: |
Size: 2048 |
Author:李林 |
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Description: 利用DFT法求周期信号的功率谱,实现离散傅立叶变换DFT,最后分析得到频谱幅度.-DFT method using the power spectrum of periodic signals seeking to achieve the Discrete Fourier Transform DFT, the final analysis, amplitude spectrum obtained Platform: |
Size: 1024 |
Author:bashezhe |
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Description: 利用平均周期图法的进行功率谱估计，得到信号的频谱幅度。-Use the average periodogram method for power spectrum estimation, be the signal amplitude spectrum. Platform: |
Size: 1024 |
Author:bashezhe |
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Description: 1、主要是产生0，1，2，3，阶贝赛尔函数图形。
2、产生线性调频信号和它的的频谱图。
3、产生单个脉冲的三维模糊图以及对应的等值图。
4、它是程序3的嵌套子程序，用于产生单个脉冲。
5、用于产生高斯和瑞利分布函数。
-These programs can produce 1、Bessel graph；2、LFM signal and its amplitude spectrum；3、ambiguous graph 4、Gaussian and Rayleigh function.
Platform: |
Size: 2048 |
Author:刘亮 |
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Description: 矩形波函数，计算其频谱，幅度谱和相位谱，与理论值比较。-Rectangular wave function to calculate the frequency spectrum, amplitude spectrum and phase spectrum, compared with the theoretical value. Platform: |
Size: 3072 |
Author:仝 |
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Description: 倒谱分析 倒谱分析是指信号短时振幅谱的对数傅里叶反
变换。它具有可近似地分离并提取出频谱包络信息
和细微结构信息的特点-Cepstrum analysis cepstrum analysis is the signal amplitude spectrum on the number of short-time Fourier inverse transform. It has can be approximately isolated and extracted spectral envelope information and fine structural characteristics of information Platform: |
Size: 1024 |
Author:仲惟姣 |
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Description: 使用MATLAB实现傅立叶变换，绘制信号的幅度频谱和相位频谱。付里叶变换的时域微分特性-Fourier transform using MATLAB implementation, rendering the signal amplitude spectrum and phase spectrum. Fourier transform of time domain differential characteristics Platform: |
Size: 1024 |
Author:亢伟 |
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Description: 清音和浊音的平均幅度，短时过零率，基音周期，对数幅度谱，高低时部分-Voiceless and voiced the average range, short-term zero crossing rate, pitch period, the number of amplitude spectrum, high or low section Platform: |
Size: 58368 |
Author:荣华 |
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Search - amplitude spectrum