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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 Hampel 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。

函数

全部展开

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
filtfiltZero-phase digital filtering
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
sgolayfiltSavitzky-Golay filtering
sosfiltSecond-order (biquadratic) IIR digital filtering
conv卷积和多项式乘法
conv2二维卷积
convmtxConvolution matrix
deconv去卷积和多项式除法
cell2sosConvert second-order sections cell array to matrix
eqtflengthEqualize lengths of transfer function's numerator and denominator
latc2tfConvert lattice filter parameters to transfer function form
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
tfConvert digital filter to transfer function
tf2latcConvert transfer function filter parameters 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

App

Signal AnalyzerVisualize and compare multiple signals and spectra

主题

用 Signal Processing Toolbox 软件对数据进行滤波

使用命令行函数或交互式 App 设计和实现滤波器。

Anti-Causal, Zero-Phase Filter Implementation

Eliminate the phase distortion introduced by an IIR filter.

补偿 FIR 滤波器引入的延迟

使用索引来抵消滤波引入的时移。

补偿 IIR 滤波器引入的延迟

当使相位信息保持原样至关重要时,请去除滤波引入的延迟和失真。

Speaker Crossover Filters

Devise a simple model of a digital three-way loudspeaker using Chebyshev Type I designs. Visualize the poles, zeros, and frequency responses of the filters.

Discrete-Time System Models

Explore different schemes to represent digital filters.

Linear System Transformations

Convert between various representational schemes for digital filters.

特色示例