고정소수점 필터

고정소수점 필터 설계

DSP System Toolbox™ 및 Fixed-Point Designer™ 기능을 사용하여 고정소수점 신호 처리 필터링 알고리즘을 모델링하고 양자화가 시스템 동작과 성능에 미치는 영향을 분석할 수 있습니다. 고정소수점 연산을 지원하는 DSP System Toolbox System object 목록은 System Objects in DSP System Toolbox that Support Fixed-Point Design 항목을 참조하십시오. 고정소수점 연산을 지원하는 DSP System Toolbox 블록 목록을 보려면 showsignalblockdatatypetable 함수를 사용하십시오.

객체

모두 확장

싱글레이트 필터

`dsp.AllpoleFilter`	IIR Filter with no zeros
`dsp.Differentiator`	Direct form FIR fullband differentiator filter
`dsp.FIRFilter`	Static or time-varying FIR filter
`dsp.HighpassFilter`	FIR or IIR highpass filter
`dsp.IIRFilter`	Infinite impulse response (IIR) filter
`dsp.LowpassFilter`	FIR or IIR lowpass filter
`dsp.SOSFilter`	Implement cascade of second order section filters (R2020a 이후)

멀티레이트 및 다단 필터

`dsp.CICCompensationDecimator`	Compensate for CIC decimation filter using FIR decimator
`dsp.CICCompensationInterpolator`	Compensate for CIC interpolation filter using FIR interpolator
`dsp.CICDecimator`	Decimate signal using cascaded integrator-comb (CIC) filter
`dsp.CICInterpolator`	Interpolate signal using cascaded integrator-comb filter
`dsp.DigitalDownConverter`	Translate digital signal from intermediate frequency (IF) band to baseband and decimate it
`dsp.DigitalUpConverter`	Interpolate digital signal and translate it from baseband to IF band
`dsp.FarrowRateConverter`	Polynomial sample rate converter with arbitrary conversion factor
`dsp.FIRDecimator`	Perform polyphase FIR decimation
`dsp.FIRHalfbandDecimator`	Halfband decimator
`dsp.FIRHalfbandInterpolator`	Halfband interpolator
`dsp.FIRInterpolator`	Perform polyphase FIR interpolation
`dsp.FIRRateConverter`	Perform polyphase FIR sample rate conversion
`dsp.SubbandAnalysisFilter`	Decompose signal into high-frequency and low-frequency subbands
`dsp.SubbandSynthesisFilter`	Reconstruct signal from high-frequency and low-frequency subbands

적응 필터

dsp.LMSFilter Compute output, error, and weights of least mean squares (LMS) adaptive filter

함수

`freqrespest`	Frequency response estimate via filtering
`freqrespopts`	Create an options object for frequency response estimate
`freqz`	Frequency response of discrete-time filter System object
`impz`	Impulse response of discrete-time filter System object
`isstable`	Verify that discrete-time filter System object is stable
`noisepsd`	Power spectral density of filter output due to roundoff noise
`noisepsdopts`	Create an options object for output noise PSD computation
`reorder`	Reorder second-order sections of biquadratic filter System object
`scale`	Scale second-order sections
`specifyall`	Fully specify fixed-point filter System object settings
`zplane`	이산시간 필터 System object에 대한 z 평면 영점-극점 플로팅

블록

모두 확장

싱글레이트 필터

Allpole Filter	Model allpole filters
Biquad Filter	Model biquadratic IIR (SOS) filters
Differentiator Filter	Direct form FIR fullband differentiator filter
Discrete Filter	Model Infinite Impulse Response (IIR) filters
Discrete FIR Filter	Model FIR filters
Highpass Filter	Design FIR or IIR highpass filter
Lowpass Filter	Design FIR or IIR lowpass filter

멀티레이트 및 다단 필터

CIC Compensation Decimator	Compensate for CIC filter using FIR decimator
CIC Compensation Interpolator	Compensate for CIC filter using FIR interpolator
CIC Decimation	Decimate signal using cascaded integrator-comb filter
CIC Interpolation	Interpolate signal using cascaded integrator-comb filter
Digital Down-Converter	Translate digital signal from intermediate frequency (IF) band to baseband and decimate it
Digital Up-Converter	Interpolate and translate digital signal from baseband to intermediate frequency (IF) band
Farrow Rate Converter	Polynomial sample-rate converter with arbitrary conversion factor
FIR Decimation	Perform polyphase FIR decimation
FIR Halfband Decimator	Decimate signal using polyphase FIR halfband filter
FIR Halfband Interpolator	Interpolate signal using polyphase FIR half band filter
FIR Interpolation	Perform polyphase FIR interpolation
FIR Rate Conversion	Perform polyphase FIR sample rate conversion
Two-Channel Analysis Subband Filter	Decompose signal into high-frequency and low-frequency subbands
Two-Channel Analysis Subband Filter	Decompose signal into high-frequency and low-frequency subbands

적응 필터

LMS Filter

Compute output, error, and weights using least mean squares (LMS) adaptive algorithm

필터 구현

Filter Realization Wizard

Construct filter realizations using digital filter blocks or Sum, Gain, and Delay blocks

도움말 항목

Fixed-Point Precision Rules for Avoiding Overflow in FIR Filters
Precision Rules for Avoiding Overflow in FIR Filters.
Create an FIR Filter Using Integer Coefficients
Learn how to create an FIR filter using integer coefficients.
Use Filter Designer with DSP System Toolbox Software
Presents a detailed reference covering the fixed-point, multirate, and scaling pages of the Filter Designer App.
Fixed-Point Filter Design in MATLAB
Design filters for use with fixed-point input.