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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。

App

信号分析器Visualize and compare multiple signals and spectra

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 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

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.

离散时间系统模型

了解表示数字滤波器的不同方案。

Linear System Transformations

Convert between various representational schemes for digital filters.

Human Activity Recognition Simulink Model for Smartphone Deployment (Statistics and Machine Learning Toolbox)

Generate code from a classification Simulink® model prepared for deployment to a smartphone.

特色示例