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필터 설계

FIR 및 IIR 필터의 설계와 분석

DSP System Toolbox™ 함수, 앱, 블록을 사용하여 다양한 디지털 FIR 및 IIR 필터를 설계하고 분석할 수 있습니다. 이러한 필터 중 일부에는 나이퀴스트 필터, 반대역 필터, CIC 필터, 고급 등리플 필터, 준선형 위상 IIR 필터와 같은 고급 필터가 포함됩니다.

설계 기법은 필터 설계 사양을 기반으로 하여 필터 계수를 구합니다. Tunable Bandpass IIR FilterTunable Bandstop IIR Filter와 같은 특정 블록에는 조정 가능형 필터 사양이 있어 시뮬레이션이 실행되는 동안 필터의 사양을 변경하고 다시 설계할 수 있습니다.

필터 작성기Design filters starting with frequency and magnitude specifications (filterBuilder)

함수

모두 확장

filterDesignerOpen Filter Designer app
filterBuilderInteractive filter design
fvtoolVisualize frequency response of DSP filters
butter버터워스 IIR 디지털 필터 설계
cheby1Chebyshev Type I filter using specification object
cheby2Chebyshev Type II filter using specification object
designApply design method to filter specification object
designmethodsMethods available for designing filter from specification object
designoptionsShow all options available for specified design
designoptsValid input arguments and values for specification object and method
ellipElliptic filter using specification object
equirippleEquiripple single-rate FIR filter from specification object
freqsampReal or complex frequency-sampled FIR filter from specification object
helpHelp for design method with filter specification
setspecsSpecifications for filter specification object
validstructuresStructures for specification object with design method
fdesignFilter design specification object
fdesign.bandpassBandpass filter design specification object
fdesign.bandstopBandstop filter design specification object
fdesign.highpassHighpass filter specification object
fdesign.lowpassLowpass filter specification
fdesign.decimatorDecimator filter specification object
fdesign.interpolatorInterpolator filter specification
fdesign.rsrcRational-factor sample-rate converter specification
fdesign.arbgrpdelayArbitrary group delay filter specification object
fdesign.arbmagArbitrary response magnitude filter specification object
fdesign.arbmagnphaseArbitrary response magnitude and phase filter specification object
fdesign.ciccompCIC compensator filter specification object
fdesign.combIIR comb filter specification object
fdesign.differentiatorDifferentiator filter specification object
fdesign.fracdelayFractional delay filter specification object
fdesign.halfbandHalfband filter specification object
fdesign.hilbertHilbert filter specification object
fdesign.isinchpInverse sinc highpass filter specification
fdesign.isinclpInverse sinc lowpass filter specification
fdesign.notchNotch filter specification
fdesign.nyquistNyquist filter specification
fdesign.peakPeak filter specification
fdesign.polysrcConstruct polynomial sample-rate converter (POLYSRC) filter designer
designFracDelayFIRDesign band-limited fractional delay FIR filter (R2021a 이후)
designMultirateFIRMultirate FIR filter design
designMultistageDecimatorMultistage decimator design
designMultistageInterpolatorMultistage interpolator design
fircbandConstrained-band equiripple FIR filter
firceqripConstrained equiripple FIR filter
fireqintEquiripple FIR interpolators
firgrParks-McClellan FIR filter
firhalfbandHalfband FIR filter design
firlpnormLeast P-norm optimal FIR filter
firlsLeast-square linear-phase FIR filter design
firminphaseMinimum-phase FIR spectral factor
firnyquistLowpass Nyquist (Lth-band) FIR filter
firpr2chfbTwo-channel FIR filter bank for perfect reconstruction
ifirInterpolated FIR filter design
normalizefreqSwitch filter specification between normalized frequency and absolute frequency
ca2tfConvert coupled allpass filter to transfer function form
cl2tfConvert coupled allpass lattice to transfer function form
iircombIIR comb notch or peak filter
iirgrpdelayOptimal IIR filter with prescribed group-delay
iirlpnormLeast P-norm optimal IIR filter
iirlpnormcConstrained least Pth-norm optimal IIR filter
iirnotch2차 IIR 노치 필터
iirpeakSecond-order IIR peak or resonator filter
normalizefreqSwitch filter specification between normalized frequency and absolute frequency

객체

모두 확장

dsp.DifferentiatorDirect form FIR fullband differentiator filter
dsp.HampelFilterFilter outliers using Hampel identifier
dsp.HighpassFilterFIR or IIR highpass filter
dsp.LowpassFilterFIR or IIR lowpass filter
dsp.MedianFilterMedian filter
dsp.NotchPeakFilterSecond-order tunable notching and peaking IIR filter
dsp.VariableBandwidthFIRFilterVariable bandwidth FIR filter
dsp.VariableBandwidthIIRFilterVariable bandwidth IIR filter
dsp.CICCompensationDecimatorCompensate for CIC decimation filter using FIR decimator
dsp.CICCompensationInterpolatorCompensate for CIC interpolation filter using FIR interpolator
dsp.FIRHalfbandDecimatorHalfband decimator
dsp.FIRHalfbandInterpolatorHalfband interpolator
dsp.IIRHalfbandDecimatorDecimate by factor of two using polyphase IIR
dsp.IIRHalfbandInterpolatorInterpolate by a factor of two using polyphase IIR

블록

모두 확장

Analog Filter DesignDesign and implement analog filters
Digital Filter DesignDesign and implement digital FIR and IIR filters
Filter Realization WizardConstruct filter realizations using digital filter blocks or Sum, Gain, and Delay blocks
Tunable Bandpass IIR FilterDesign bandpass IIR filter with tunable filter specifications (R2023a 이후)
Tunable Bandstop IIR FilterDesign bandstop IIR filter with tunable filter specifications (R2023a 이후)
Arbitrary Response FilterDesign arbitrary response filter
Bandpass FilterDesign bandpass filter
Bandstop FilterDesign bandstop filter
Comb FilterDesign comb Filter
Differentiator FilterDirect form FIR fullband differentiator filter
Hampel FilterFilter outliers using Hampel identifier
Highpass FilterDesign FIR or IIR highpass filter
Hilbert FilterDesign Hilbert filter
Inverse Sinc FilterDesign inverse sinc filter
Lowpass FilterDesign FIR or IIR lowpass filter
Median FilterMedian filter
Notch-Peak FilterDesign second-order tunable notching and peaking IIR filter
Variable Bandwidth FIR FilterDesign tunable bandwidth FIR filter
Variable Bandwidth IIR FilterDesign tunable bandwidth IIR filter
CIC FilterDesign Cascaded Integrator-Comb (CIC) Filter
Nyquist FilterDesign Nyquist filter

도움말 항목