Description: the programs are an introduction to DSP ,the programs illustrate the frequency response ,impulse response and magnitude response Platform: |
Size: 1024 |
Author:ria |
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Description: 本程序为一个用matlab实现的语音滤波程序，能计算并显示语音信号的幅频特性，巴特沃斯低通滤波器幅度和相位响应，引入噪声后的幅频特性，以及滤波后的DFT幅频特性。本程序附有语音文件以供试验。-This program is an implementation using matlab voice filtering procedures, can calculate and display the speech signal amplitude-frequency characteristics of Butterworth low-pass filter magnitude and phase response, after the introduction of noise, amplitude-frequency characteristics, as well as the filtered DFT amplitude-frequency characteristics. This procedure for testing with voice file. Platform: |
Size: 4096 |
Author:周峰 |
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Description: This filter is implemented as an FIR filter which has impulse response.MATLAB program for generating the impulse response of the Jakes filter,and filtering white noise with the filter.The first output figure shows the estimated PSD at the filter output. The second figure shows the magnitude of the envelope on a log scale. In a wireless communication system, this corresponds to the fading envelope. Platform: |
Size: 2048 |
Author:nidhi |
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Description: 用MATLAB函数fir1设计一个具有如下指标的线性相位FIR带通滤波器：阻带截止频率为0.55pi 和0.85pi，通带截止频率为0.65pi和 0.75pi，最大通带衰减为0.2dB，最小阻带衰减为42dB。分别利用下面的窗函数来设计滤波器：汉宁窗、汉明窗、布莱克曼窗。对于每种情况，给出其冲激响应系数并画出设计的滤波器的幅频响应。-Designed with a MATLAB function with the following indicators fir1 linear phase FIR band-pass filter: stopband cutoff frequency for the 0.55pi and 0.85pi, passband cutoff frequency of 0.65pi and 0.75pi, maximum passband attenuation is 0.2dB, minimum stopband attenuation of 42dB. Window functions were used to design the following filter: Hanning, Hamming window, Blackman window. For each case, given its impulse response filter coefficients and draw the design magnitude response. Platform: |
Size: 5120 |
Author:董晓曦 |
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Description: 由地面效应反转和一个单一的垂直阵列源距离和高度确定
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matlab文件的集合来确定与一个单一的垂直阵列的来源范围，并高度。
使用一个分析传播模型来计算上述的阻抗平面的声场。
用途要么转向响应功率（SRP）与Barteltt或MUSIC波束形成器或幅度/相位差异
各麦克风之间。-Source distance and height determination by ground effect inversion and a single vertical array
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A collection of Matlab file to determine the source range and height with a single vertical array.
Uses an analytical propagation model to calculate the sound field above an impedance plane.
Uses either steered response power (SRP) with Barteltt or MUSIC beamformer or the magnitude/phase differences
between the microphones.
Position_Bartlett.m
Bartlett (delay-and-sum) based position estimation. Fixed grid search.
Position_Bartlett_CF.m
Bartlett (delay-and-sum) based position estimation. Adaptive grid search: Coarse-to-fine grid contraction.
Position_MUSIC.m
MUSIC (eigendecomposition of the covariance matrix) based position estimation. Fixed grid search.
Position_MUSIC_CF.m
MUSIC (eigendecomposition of the covariance matrix) based position estimation.
Adaptive grid s Platform: |
Size: 6144 |
Author:李云 |
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Description: 水声通信面临的最困难的问题是多途干扰,其中自多途引起接收信号的幅度衰落,互多途引起接收信号的码间干扰,再加上海洋环境的高噪声背景、低的载波频率、极为有限的带宽以及传输条件的时间—空间—频率变化特性,使得通信过程十分困难。此外，水声通信试验的成本高，难度大，也为水声通信研究带来挑战。
本软件对水声信道的仿真研究很有帮助，可以产生声线图，冲激响应，声速图等仿真文件，结合Matlab画图工具绘制图像，对水声信道的模拟仿真很有帮助。-The most difficult problem faced by underwater acoustic communication is multi-path interference, which since multipath fading caused by the magnitude of the received signal, and mutual inter-symbol interference caused by multipath signal reception, plus the marine environment of high background noise, low carrier frequency , very limited bandwidth and transmission conditions of time- space- frequency characteristic such that the communication process is very difficult. In addition, the high cost of underwater acoustic communication experiment, difficult, and challenges for the study of underwater acoustic communication. This software is useful for simulation study of underwater acoustic channel can produce sound chart, impulse response, sound velocity diagrams simulation files, combined with Matlab drawing tools to draw the image of underwater acoustic channel simulation helpful. Platform: |
Size: 415744 |
Author:苏羽 |
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Description: This MATLAB exercise computes the log magnitude of the STFT of a specified frame of speech. Then, using the
same frame of speech, the exercise computes LPC log spectral matches to the speech frame, using the autocorrelation
method, the covariance method, and the lattice method. The four resulting log magnitude responses ( the STFT
of the speech frame and the three LPC analysis methods) are then plotted on a common plot, and compared in
terms of how each LPC analysis method approximates the STFT log magnitude response.
-This MATLAB exercise computes the log magnitude of the STFT of a specified frame of speech. Then, using the
same frame of speech, the exercise computes LPC log spectral matches to the speech frame, using the autocorrelation
method, the covariance method, and the lattice method. The four resulting log magnitude responses ( the STFT
of the speech frame and the three LPC analysis methods) are then plotted on a common plot, and compared in
terms of how each LPC analysis method approximates the STFT log magnitude response.
Platform: |
Size: 2709504 |
Author:burak |
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Description: This MATLAB function opens FVTool and displays the magnitude response of the digital filter defined with numerator. Platform: |
Size: 1024 |
Author:Abdolmaleki
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Description: 计算平面桁架的动力响应，其在节点四处受到一个大小为200N的阶跃力(The dynamic response of the plane truss is calculated, which is subjected to a step force of magnitude 200N at the node 4.) Platform: |
Size: 1024 |
Author:w1694368541
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