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数字滤波

零相位滤波、中位数滤波、叠加滤波、传递函数表示

低通、高通、带通和带阻滤波器多通道数据,无需设计滤波器或补偿延迟。执行零相位滤波以消除延迟和相位失真。使用中位数或汉佩尔滤波以消除峰值和离群值。将传递函数转换为不同表示形式,如二阶节或极点和零点。

App

信号分析器可视化和比较多个信号和频谱

函数

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bandpassBandpass-filter signals
bandstopBandstop-filter signals
highpassHighpass-filter signals
lowpassLowpass-filter signals
fftfiltFFT-based FIR filtering using overlap-add method
filter1 维数字滤波器
filter2二维数字滤波器
filtfilt零相位数字滤波
filticInitial conditions for transposed direct-form II filter implementation
hampelOutlier removal using Hampel identifier
latcfiltLattice and lattice-ladder filter implementation
medfilt11-D median filtering
residuezZ-transform partial-fraction expansion
sgolayfilt萨维茨基-戈雷滤波
sosfiltSecond-order (biquadratic) IIR digital filtering
conv卷积和多项式乘法
conv2二维卷积
convmtxConvolution matrix
deconv最小二乘反卷积和多项式除法
cell2sosConvert second-order sections cell array to matrix
eqtflengthEqualize lengths of transfer function numerator and denominator
latc2tfConvert lattice filter coefficients to transfer function form
scaleFilterSectionsScale cascaded transfer functions with scale values (自 R2023b 起)
sos2cellConvert second-order sections matrix to cell array
sos2ssConvert digital filter second-order section parameters to state-space form
sos2tfConvert digital filter second-order section data to transfer function form
sos2zpConvert digital filter second-order section parameters to zero-pole-gain form
ssConvert digital filter to state-space representation
ss2sosConvert digital filter state-space parameters to second-order sections form
ss2tf将状态空间表示形式转换为传递函数
ss2zpConvert state-space filter parameters to zero-pole-gain form
tf将数字滤波器转换为传递函数
tf2latcConvert transfer function filter coefficients to lattice filter form
tf2sosConvert digital filter transfer function data to second-order sections form
tf2ssConvert transfer function filter parameters to state-space form
tf2zpConvert transfer function filter parameters to zero-pole-gain form
tf2zpkConvert transfer function filter parameters to zero-pole-gain form
zp2sosConvert zero-pole-gain filter parameters to second-order sections form
zp2ssConvert zero-pole-gain filter parameters to state-space form
zp2tfConvert zero-pole-gain filter parameters to transfer function form
zpkConvert digital filter to zero-pole-gain representation
dspfwizCreate Simulink filter block using Realize Model panel
filt2blockGenerate Simulink filter block

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