Signal Processing Toolbox Getting Started Signal Processing Basics What Is the Signal Processing Toolbox? Signal Processing Toolbox Central Features Filtering and FFTs Signals and Systems Key Areas: Filter Design and Spectral Analysis Interactive Tools Extensibility Representing Signals Vector Representation Waveform Generation: Time Vectors and Sinusoids Common Sequences: Unit Impulse, Unit Step, and Unit Ramp Multichannel Signals Common Periodic Waveforms Common Aperiodic Waveforms The pulstran Function The Sinc Function The Dirichlet Function Working with Data Filter Implementation and Analysis Convolution and Filtering Filters and Transfer Functions Filtering with the filter Function The filter Function Other Functions for Filtering Multirate Filter Bank Implementation Anti-Causal, Zero-Phase Filter Implementation Frequency Domain Filter Implementation Impulse Response Frequency Response Digital Domain Analog Domain Magnitude and Phase Delay Zero-Pole Analysis Linear System Models Discrete-Time System Models Continuous-Time System Models Linear System Transformations Discrete Fourier Transform Selected Bibliography Examples Filter Design and Implementation Filter Requirements and Specification IIR Filter Design Classical IIR Filter Design Using Analog Prototyping Comparison of Classical IIR Filter Types FIR Filter Design Linear Phase Filters Windowing Method Multiband FIR Filter Design with Transition Bands Constrained Least Squares FIR Filter Design Arbitrary-Response Filter Design Special Topics in IIR Filter Design Analog Prototype Design Frequency Transformation Filter Discretization Filter Implementation Using dfilt Selected Bibliography Statistical Signal Processing Correlation and Covariance Bias and Normalization Multiple Channels Spectral Analysis Spectral Estimation Method Nonparametric Methods Parametric Methods Selected Bibliography Special Topics Windows Graphical User Interface Tools Basic Shapes Generalized Cosine Windows Kaiser Window Chebyshev Window Parametric Modeling Time-Domain Based Modeling Frequency-Domain Based Modeling Resampling Cepstrum Analysis Inverse Complex Cepstrum FFT-Based Time-Frequency Analysis Median Filtering Communications Applications Deconvolution Specialized Transforms Chirp z-Transform Discrete Cosine Transform Hilbert Transform Selected Bibliography FDATool: A Filter Design and Analysis GUI Overview Filter Design Methods Using the Filter Design and Analysis Tool Analyzing Filter Responses Filter Design and Analysis Tool Panels Getting Help Opening FDATool Choosing a Response Type Choosing a Filter Design Method Setting the Filter Design Specifications Filter Order Options Bandpass Filter Frequency Specifications Bandpass Filter Magnitude Specifications Computing the Filter Coefficients Analyzing the Filter Using Data Markers Drawing Spectral Masks Changing the Sampling Frequency Displaying the Response in FVTool Editing the Filter Using the Pole/Zero Editor Converting the Filter Structure Converting to a New Structure Converting to Second-Order Sections Importing a Filter Design Filter Structures Exporting a Filter Design Exporting Coefficients or Objects to the Workspace Exporting Coefficients to an ASCII File Exporting Coefficients or Objects to a MAT-File Exporting to SPTool Exporting to Simulink Generating a C Header File Generating an M-File Managing Filters in the Current Session Saving and Opening Filter Design Sessions SPTool: A Signal Processing GUI Suite SPTool: An Interactive Signal Processing Environment SPTool Data Structures Opening SPTool Getting Context-Sensitive Help Signal Browser Opening the Signal Browser Filter Designer Filter Types FIR Filter Methods IIR Filter Methods Pole/Zero Editor Spectral Overlay Feature Opening the Filter Designer Filter Visualization Tool Opening the Filter Visualization Tool Filter Visualization Tool Components Using Data Markers Analysis Parameters Spectrum Viewer Opening the Spectrum Viewer Filtering and Analysis of Noise Step 1: Importing a Signal into SPTool Step 2: Designing a Filter Step 3: Applying a Filter to a Signal Step 4: Analyzing a Signal Step 5: Spectral Analysis in the Spectrum Viewer Exporting Signals, Filters, and Spectra Opening the Export Dialog Box Exporting a Filter to the MATLAB Workspace Accessing Filter Parameters Accessing Filter Parameters in a Saved Filter Accessing Parameters in a Saved Spectrum Importing Filters and Spectra into SPTool Importing Filters Importing Spectra Loading Variables from the Disk Selecting Signals, Filters, and Spectra in SPTool Editing Signals, Filters, or Spectra in SPTool Designing a Filter with the Pole/Zero Editor Positioning Poles and Zeros Redesigning a Filter Using the Magnitude Plot Setting Preferences Making Signal Measurements with Markers Functions -- Categorical List FIR Digital Filter Design IIR Digital Filter Design IIR FIlter Order Estimation Filter Analysis Filter Implementation Analog Lowpass Filter Prototypes Analog Filter Design Analog Filter Transformation Filter Discretization Linear System Transformations Windows Transforms Cepstral Analysis Statistical Signal Processing and Spectral Analysis Parametric Modeling Linear Prediction Multirate Signal Processing Waveform Generation Specialized Operations Graphical User Interfaces Functions -- Alphabetical List GUI: Filter Design and Analysis Tool Filter Design and Analysis GUI Overview Standard Toolbar Buttons Display Region Response Types and Icons Data Markers Design Masks Analysis Parameters Sampling Frequency Full View Analysis Current Filter Information Region Design Filter Panel Response Type Region Design Method Region Filter Order Region Options Region Frequency Specifications Region Frequency Specifications Region: Lowpass Frequency Specifications Region: Raised Cosine Frequency Specifications Region: Highpass Frequency Specifications Region: Bandpass Frequency Specifications Region: Bandstop Frequency and Magnitude Specifications Regions: Other Filters Magnitude Specifications Region Magnitude Specifications Region: Lowpass Magnitude Specifications Region: Raised Cosine Magnitude Specifications Region: Highpass Magnitude Specifications Region: Bandpass Magnitude Specifications Region: Bandstop Design Filter Button Import Filter Panel Filter Coefficients Region Import Filter Button Pole/Zero Editor Panel Plot Mode Buttons Plot Parameters Edit Menu Options Other Sidebar Buttons Demo: Vector Transition Processing Using Windows Vector Transition Demo--Background Information Reducing Settling Time by Smoothing Using Windows for Smoothing Example--Airplane Takeoff Vector Transition Demo Window Selection Vector Definition Second Derivative Plot Display Plots Technical Conventions Release Notes Signal Processing Toolbox 6.3 Release Notes New Features New spectrogram Function New gaussfir Function FDATool Enhancements FVTool Enhancements New Demos Major Bug Fixes Upgrading from an Earlier Release dfilt -- Coefficients Method dfilt -- Passing Filter States FDATool -- State Space Filters Filter Wizard Product Dependency firpm and cfirpm Inputs FVTool -- Default Phase Units Plotting PSD Objects and Function Output Spectral Analysis Functions Inputs Obsolete Functions from Version 6.3 Obsolete Functions from Version 6.2 Known Software and Documentation Problems Signal Processing Toolbox 6.2.1 Release Notes Enhancements FDATool Enhancements FVTool Enhancement Major Bug Fixes Upgrading from an Earlier Release Changes to Discrete-time Filters (DFILTs) Undo/Redo Removed from FDATool Signal Processing Toolbox 6.2 Release Notes New Features Spectrum Objects Dspdata Objects Options Objects Filter States Objects Enhancements to Discrete-time Filter Objects Enhancements to Window Objects Enhancement to Spectral Estimation Functions FDATool Enhancements FVTool Enhancement New Demos Major Bug Fixes Platform Limitations FDATool -- 800 x 600 Resolution Upgrading from an Earlier Release Discrete-Time Filter States Property Signal Processing Toolbox 6.1 Release Notes New Features Discrete-Time Filter Objects FDATool Enhancements FVTool Enhancements SPTool Enhancement--Filter Viewer Major Bug Fixes Upgrading from an Earlier Release Uninstall Previous Versions Before Installing Version 6.1 Filter Structure Name Changes New Warning Message for DFILT Filter method Printable Documentation (PDF) Product Page (Web)