Filtres virgule fixe
Vous pouvez modéliser des algorithmes de filtrage pour le traitement du signal en virgule fixe et analyser les effets de la quantification sur le comportement et la performance du système avec les fonctionnalités de DSP System Toolbox™ et de Fixed-Point Designer™. Pour une liste des System objects de DSP System Toolbox qui supportent les opérations en virgule fixe, veuillez consulter System Objects in DSP System Toolbox that Support Fixed-Point Design. Pour une liste des blocs de DSP System Toolbox qui supportent les opérations en virgule fixe, utilisez la fonction showsignalblockdatatypetable
.
Objets
Fonctions
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 | Z-plane zero-pole plot for discrete-time filter System object |
Blocs
Rubriques
- 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.