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freqz_m
- 求取系统的绝对幅度响应、相对的db值幅度响应、相位响应和群延时响应的函数 ％ ％db为相对振幅(dB) ％mag为绝对振幅 ％pha为相位响应 ％grd为群延时 ％w为频率样本点向量 ％b为Ha(z)分子多项式系数(对FIR而言，b=h) ％a为Hz(z)分母多项式系数(对FIR而言，a=1) ％-strike rate system in response to the absolute and relative value range db respons
TSM
- Draws the magnitude of vector x in the time domain, and draws its power spectrum in dB where the number of frequency points is npointsDFT.
signal_analyzer
- 最近看到有人提问怎样用FFT实现频谱分析，我认为能够进行到频谱分析的人，对于系统研究的深度基本上已经相当不错了。本人今天做了一个例程，发给大家参考一下。 历程主要内容(signal_analyzer.rar)如下： test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输
window_function
- the magnitude responses in dB of the window functions in the frequency domain
fftbianhuan
- test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输入的相位差。-test1.txt the first time as t, 0.001s for the step the second as the system input signal the third as t
p02
- digital band-pass filter with a bandwidth of 100 Hz, mean frequency 250 Hz, 0.1 db
Doppler
- A signal is transmitted using a carrier frequency of 900 MHz. It is transmitted through a multipath channel which can be modelled as Rayleigh fading. Assumingthe Dopper spread as 10Hz and the number of multipaths as 10, generate the Rayleigh
signal_analyzer(1)
- 主要内容(signal_analyzer.rar)如下： test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输入的相位差。 -Main Content (signal_analyzer.rar) as follows: test1.txt the fir
zr
- 用窗函数法设计一个能对模拟信号进行滤波的线性相位FIR低通滤波器。抽样频率为 kHz，通带截止频率为 kHz，阻带截止频率为 kHz，要求阻带最小衰减 dB。为了降低运算量，所设计滤波器的阶数要尽可能的低-With the window method to design a filter to the analog signals of linear phase FIR low-pass filter. Sampling frequency is kHz, passband cutoff fre
zr
- 用双线性变换法设计一个Butterworth低通滤波器，要求其通带截止频率100Hz，阻带截止频率200Hz，通带衰减小于2dB，阻带衰减大于15 dB，采样频率为500 Hz。-Using bilinear transformation to design a Butterworth low-pass filter, requiring that their pass-band cutoff frequency 100Hz, stopband cutoff frequency 200Hz, p
fir-high
- 用汉宁窗函数法设计一个数字FIR高通滤波器，要求通带边界频率为500Hz，阻带边界频率为400Hz，通带最大衰减1dB，阻带最小衰减40dB，抽样频率为2000Hz，用MATLAB画出幅频特性，画出并分析滤波器传输函数的零极点-With han ning window function method to design a digital FIR high-pass filter, request bandpass boundary frequency for 500 Hz, stop-band
design
- 低通Chebyshev 1型滤波器，通带边界频率为1500Hz，通带波纹小于3dB，阻带边界频率2000Hz，阻带衰减为40dB，采样频率为8000Hz-Low-pass Chebyshev 1 filter passband edge frequency of 1500Hz, less than 3dB passband ripple, stopband edge frequency 2000Hz, stop-band attenuation of 40 dB, the sampling fr
zvs
- converter is suppressed according to CISPR 22 standard limits. The fundamental frequency component with higher order harmonics of 2 MHz resonant converter after the application of filter is at 33.18 dBµ V. The designed filter has attenuated the c
gussi-avg-fre-err
- Generate the code for adding user defined Gaussian Noise (in dB) and a. Filter out the same using average filter (generate function) b. Determine the frequency plot c. Determine error image, SNR and PSNR
salt-medi-frc-err
- Generate the code for adding user defined Salt and Pepper Noise (in dB) and a. Filter out the same using median filter (generate function) b. Determine the frequency plot c. Determine error image, SNR and PSNR
Butter
- 设计一巴特沃兹带通滤波器，其３dB边界频率分别为f2=110kHz和f1=90kHz，在阻带f3 = 120kHz处的最小衰减大于10dB，采样频率fs=400kHz。-Design of a Butterworth band pass filter and the 3dB frequency boundary respectively and f1=90kHz f2=110kHz and in resistance with F3 = 120kHz minimum attenuation of
$R8SOOS0
- 随机产生一次数据x=randn（1，1024*8） 对这个序列进行FFT然后求功率谱密度 。应用MATLAB画出来横坐标为频率（Frequency(hz)））纵坐标为功率谱密度（Power Spectrum Density） (dB))的图形(Randomly generate a data x=randn (11024*8) to carry out FFT for this sequence and then obtain power spectral density. Drawing th