huiseguanlian

说明：  根据语音信号的特点给出有关滤波器的性能指标：1）低通滤波器性能指标，fp=1000Hz，fc=1200 Hz， As=100dB，Ap=1dB；2）高通滤波器性能指标，fc=2800 Hz，fp=3000 Hz As=100dB，Ap=1dB；3）带通滤波器性能指标，fp1=1200 Hz，fp2=3000 Hz，fc1=1000 Hz，fc2=3200 Hz，As=100dB，Ap=1dB。用IIR对其分析，最后，利用MATLAB中的函数freqz画出各滤波器的频率响应。(This article according to the IIR filter and the FIR filter characteristic, uses the bilinearity method of transformation under the MATLAB bad boundary to design IIR and to design the FIR numeral filter separately with the window box number, and carries on the analysis to the gathering pronunciation signal, and finally gives IIR and FIR to the pronunciation filter effect.)

说明：  根据滤波器指标选择合适的窗函数，计算窗函数的长度N，调用MATLAB函数fir1设计一个FIR低通滤波器。并编写程序，调用MATLAB快速卷积函数fftfilt实现对xt的滤波。绘图显示滤波器的频响特性曲线、滤波器输出信号的幅频特性图和时域波形图。  (Select the appropriate indicators according to filter window function, calculate the length of window function N, called MATLAB function fir1 design a FIR low-pass filter. And programming, call MATLAB functions fftfilt achieve fast convolution filtering xt. Graphics filter frequency response curve, the filter output signal amplitude and frequency characteristics of maps and time-domain waveform.  )

时频分析的经典程序集，与《Matlab 时频分析与应用》配套使用。(Time-frequency analysis of the classic assembly with " Matlab time-frequency analysis and application of" supporting the use.)

theoretical and simulated BER are in good agreement in AWGN channel the result can be extended to general M-QAM using slight modification .

MQAM在AWGN信道下的星座图与误码率分析(MQAM constellation and BER Analysis)

此代码主要是用simulink搭建的一个三电平SVPWM模型，能出图，实用型的一个代码。(This code is to use a three-level SVPWM simulink model structures, to a map, a practical code.)

MATLAB CODE FOR PYTHON

Cursor Window extends SQLiteClosable implements Parcelable.

借助matlab平台实现卡尔曼滤波算法，并对其外滤波后的误差进行分析(With the aid of matlab platform to realize the kalman filter algorithm, and the outer filter after the error is analyzed )

地震信号数据处理 显示各道信号波形 地震成像(Data processing seismic signal waveforms showing the Road, seismic imaging)