Main Content

필터 분석

필터의 주파수 응답 시각화, 필터의 속성 및 특성 확인

DSP System Toolbox™는 필터 설계 사양을 검증하기 위한 여러 필터 분석 기능을 제공합니다. 이러한 기능을 사용하여 크기, 위상, 임펄스, 계단 응답과 같은 다양한 필터 응답을 시각화할 수 있습니다. coeffs, cost, info와 같은 함수를 사용하여 필터 속성을 결정하고 firtype, isfir, isstable과 같은 함수를 사용하여 필터 특성을 확인할 수도 있습니다. DSP System Toolbox가 제공하는 모든 분석 함수의 전체 목록은 Analysis Functions for Filter System Objects 항목을 참조하십시오.

MATLAB®의 dsp.DynamicFilterVisualizer 객체와 Simulink®의 Filter Visualizer 블록을 사용하여 시변 디지털 필터의 크기 응답과 위상 응답을 시각화할 수도 있습니다. 자세한 내용은 Configure Filter Visualizer 항목을 참조하십시오.

앱

필터 분석기View, analyze, and compare filters (R2024a 이후)

함수

모두 확장

dsp.DynamicFilterVisualizerDisplay time-varying magnitude and phase response of digital filters
filterDesigner필터 디자이너 앱 열기
fvtoolDSP 필터의 주파수 응답 시각화
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 the impulse response of a multirate or a single-rate filter (R2024a 이후)
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 roundoff noise
noisepsdoptsCreate an options object for output noise PSD computation
outputDelayDetermine output delay of single-rate or multirate filter (R2022a 이후)
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
zplane이산시간 필터 System object에 대한 z 평면 영점-극점 플로팅
coeffs필터 System object 계수를 구조체로 반환
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
order이산시간 필터 System object의 차수
resetSystem object의 내부 상태 재설정
ssConvert discrete-time filter System object to state-space representation
tf이산시간 필터 System object를 전달 함수로 변환
zpk이산시간 필터 System object의 영점-극점-이득 변환
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 for CIC rate conversion filter objects (R2024a 이후)
allpass2wdfAllpass to Wave Digital Filter coefficient transformation
normalizefreqSwitch filter specification between normalized frequency and absolute frequency
wdf2allpassWave Digital Filter to allpass coefficient transformation

객체

filterAnalyzerAnalyze filters with the Filter Analyzer app (R2024a 이후)

블록

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

도움말 항목