Filteranalyse

Visualisieren der Frequenzgänge von Filtern, Überprüfen der Filtereigenschaften und -merkmale

DSP System Toolbox™ bietet Ihnen verschiedene Funktionen zur Filteranalyse, um die Filterspezifikationen zu validieren. Mit diesen Funktionen können Sie die verschiedenen Filterantworten visualisieren, z. B. Amplitudengang, Phasengang, Impulsantwort und Sprungantwort. Zudem können Sie die Filtereigenschaften mit Funktionen wie coeffs, cost und info festlegen, und die Filtereigenschaften mit Funktionen wie firtype, isfir und isstable überprüfen. Für eine vollständige Liste aller Analysefunktionen, die DSP System Toolbox bietet, finden Sie unter Analysis Functions for Filter System Objects.

Sie können zudem den Amplituden- und Phasengang zeitvariabler digitaler Filter mithilfe des dsp.DynamicFilterVisualizer-Objekts in MATLAB® und des Filter Visualizer-Blocks in Simulink® visualisieren. Weitere Informationen finden Sie unter Configure Filter Visualizer.

Apps

Filter AnalyzerView, analyze, and compare filters (Seit R2024a)

Funktionen

alle erweitern

dsp.DynamicFilterVisualizerDisplay time-varying magnitude and phase response of digital filters
filterAnalyzerAnalyze filters with Filter Analyzer app (Seit R2024a)
freqrespestFrequency response estimate via filtering
freqrespoptsCreate an options object for frequency response estimate
freqzFrequency response of discrete-time filter System object
freqzmrCompute DTFT approximation of impulse response of multirate or single-rate filter (Seit R2024a)
grpdelayGroup delay response of discrete-time filter System object
impzImpulse response of discrete-time filter System object
impzlengthLength of impulse response of discrete-time filter System object
measureMeasure frequency response characteristics of filter System object
noisepsdPower spectral density of filter output due to round-off noise
noisepsdoptsCreate an options object for output noise PSD computation
outputDelayDetermine output delay of single-rate or multirate filter (Seit R2022a)
phasedelayPhase delay response of discrete-time filter System object
phasezPhase response of discrete-time filter System object (unwrapped)
stepzStep response of discrete-time filter System object
zerophaseZero-phase response of discrete-time filter System object
zplaneZ-plane zero-pole plot for discrete-time filter System object
coeffsReturns the filter System object coefficients in a structure
costEstimate cost of implementing filter System object
cumsecCumulative second-order section of the biquadratic filter
dispDisplay filter properties and values
filtstates.cicStore CIC filter states
infoInformation about filter System object
orderOrder of discrete-time filter System object
resetReset internal states of System object
setInputSampleRateSpecify input sample rate in filter objects (Seit R2026a)
ssConvert discrete-time filter System object to state-space representation
tfConvert discrete-time filter System object to transfer function
zpkZero-pole-gain conversion of discrete-time filter System object
firtypeDetermine type (1-4) of linear phase FIR filter System object
isallpassVerify that discrete-time filter System object is allpass
isfirVerify if filter System object is FIR
islinphaseVerify that discrete-time filter System object is linear phase
ismaxphaseVerify that discrete-time filter System object is maximum phase
isminphaseVerify that discrete-time filter System object is minimum phase
isrealVerify that discrete-time filter System object is real
issosVerify if discrete-time System object filter is in second-order sections form
isstableVerify that discrete-time filter System object is stable
scalecheckCheck scaling of biquadratic filter
realizemdlSimulink subsystem block for filter
realizeModelCreate Simulink block equivalent of CIC rate conversion filter objects (Seit R2024a)
allpass2wdfAllpass to Wave Digital Filter coefficient transformation
normalizefreqSwitch filter specification between normalized frequency and absolute frequency
wdf2allpassWave Digital Filter to allpass coefficient transformation

Objekte

filterAnalyzerAnalyze filters with Filter Analyzer app (Seit R2024a)

Blöcke

Filter VisualizerDisplay magnitude and phase response of time-varying digital filters (Seit R2023a)

Themen