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Overview :: FDATool: A Filter Design and Analysis GUI (Signal Proces...
1 of 4
jar:file:///G:/PROGRAM%20FILE/MATLAB%20R21010a/help/toolbox...
Overview On this page… Introduction to FDA Tool Integrated Products Filter Design Methods Using the Filter Design and Analysis Tool Analyzing Filter Responses Filter Design and Analysis Tool s Getting Help
Introduction to FDA Tool The Filter Design and Analysis Tool (FDATool) is a interface for deg and analyzing filters quickly. FDATool enables you to design digital FIR or IIR filters by setting filter specifications, by importing filters from your MATLAB workspace, or by adding, moving or deleting poles and zeros. FDATool also provides tools for analyzing filters, such as magnitude and phase response and pole-zero plots. Back to Top
Integrated Products FDATool seamlessly integrates additional functionality from other MathWorks™ products as described in the following table.
Product
Added Features
TI's C2000™
code to TI's C2000 DSP target board
Filter Design HDL Coder™
Generate synthesizable VHDL or Verilog for fixed-point filters
Filter Design Toolbox Advanced FIR and IIR design techniques (see Advanced Filter Design Methods) Filter transformations Multirate filters ®
Fixed-point filters (available only with Simulink Fixed Point™ product) Embedded IDE Link™
Export code usable by Code Composer Studio™ software
Signal Processing Blockset
Generate equivalent Signal Processing Blockset™ block for the filter
Simulink
Generate filters from atomic Simulink blocks
Back to Top
Filter Design Methods
2013-01-17 8:39 PM
Overview :: FDATool: A Filter Design and Analysis GUI (Signal Proces...
2 of 4
jar:file:///G:/PROGRAM%20FILE/MATLAB%20R21010a/help/toolbox...
FDATool gives you access to the following Signal Processing Toolbox filter design methods.
Design Method
Function
Butterworth
butter
Chebyshev Type I
cheby1
Chebyshev Type II
cheby2
Elliptic
ellip
Maximally Flat
maxflat
Equiripple
firpm
Least-squares
firls
Constrained least-squares fircls Complex equiripple
cfirpm
Window
fir1
When using the window method in FDATool, all Signal Processing Toolbox window functions are available, and you can specify a -defined window by entering its function name and input parameter.
Advanced Filter Design Methods The following advanced filter design methods are available if you have Filter Design Toolbox software.
Design Method
Function
Constrained equiripple FIR
firceqrip
Constrained-band equiripple FIR
fircband
Generalized remez FIR
firgr
Equripple halfband FIR
firhalfband
Least P-norm optimal FIR
firlpnorm
Equiripple Nyquist FIR
firnyquist
Interpolated FIR
ifir
IIR comb notching or peaking
iircomb
2013-01-17 8:39 PM
Overview :: FDATool: A Filter Design and Analysis GUI (Signal Proces...
3 of 4
Design Method
Function
All filter (given group delay)
iirgrpdelay
Least P-norm optimal IIR
iirlpnorm
Constrained least P-norm IIR
iirlpnormc
Second-order IIR notch
iirnotch
jar:file:///G:/PROGRAM%20FILE/MATLAB%20R21010a/help/toolbox...
Second-order IIR peaking (resonator) iirpeak
Back to Top
Using the Filter Design and Analysis Tool There are different ways that you can design filters using the Filter Design and Analysis Tool. For example: You can first choose a response type, such as band, and then choose from the available FIR or IIR filter design methods. You can specify the filter by its type alone, along with certain frequency- or time-domain specifications such as band frequencies and stopband frequencies. The filter you design is then computed using the default filter design method and filter order. Back to Top
Analyzing Filter Responses Once you have designed your filter, you can display the filter coefficients and detailed filter information, export the coefficients to the MATLAB workspace, and create a C header file containing the coefficients, and analyze different filter responses in FDATool or in a separate Filter Visualization Tool (fvtool). The following filter responses are available: Magnitude response (freqz) Phase response (phasez) Group delay (grpdelay) Phase delay (phasedelay) Impulse response (impz) Step response (stepz) Pole-zero plots (zplane) Zero-phase response (zerophase) Back to Top
Filter Design and Analysis Tool s The Filter Design and Analysis Tool has sidebar buttons that display particular s in the lower half of the tool. The s are Design Filter. See Choosing a Filter Design Method for more information. You use this to Design filters from scratch. Modify existing filters designed in FDATool. Analyze filters. Import filter. See Importing a Filter Design for more information. You use this to Import previously saved filters or filter coefficients that you have stored in the MATLAB workspace. Analyze imported filters. Pole/Zero Editor. See Editing the Filter Using the Pole/Zero Editor. You use this to add, delete, and move
2013-01-17 8:39 PM
Overview :: FDATool: A Filter Design and Analysis GUI (Signal Proces...
4 of 4
jar:file:///G:/PROGRAM%20FILE/MATLAB%20R21010a/help/toolbox...
poles and zeros in your filter design. If you also have Filter Design Toolbox product installed, additional s are available: Set quantization parameters — Use this to quantize double-precision filters that you design in FDATool, quantize double-precision filters that you import into FDATool, and analyze quantized filters. Transform filter — Use this to change a filter from one response type to another. Multirate filter design — Use this to create a multirate filter from your existing FIR design, create CIC filters, and linear and hold interpolators. If you have Simulink installed, this is available: Realize Model — Use this to create a Simulink block containing the filter structure. See Exporting to a Simulink Model for more information. Back to Top
Getting Help At any time, you can right-click or click the What's this? button, , to get information on the different parts of the tool. You can also use the Help menu to see complete Help information. Back to Top Was this topic helpful?
FDATool: A Filter Design and Analysis GUI
Yes
No
Opening FDATool
© 1984-2010 The MathWorks, Inc. • of Use • Patents • Trademarks • Acknowledgments
2013-01-17 8:39 PM
1 of 4
jar:file:///G:/PROGRAM%20FILE/MATLAB%20R21010a/help/toolbox...
Overview On this page… Introduction to FDA Tool Integrated Products Filter Design Methods Using the Filter Design and Analysis Tool Analyzing Filter Responses Filter Design and Analysis Tool s Getting Help
Introduction to FDA Tool The Filter Design and Analysis Tool (FDATool) is a interface for deg and analyzing filters quickly. FDATool enables you to design digital FIR or IIR filters by setting filter specifications, by importing filters from your MATLAB workspace, or by adding, moving or deleting poles and zeros. FDATool also provides tools for analyzing filters, such as magnitude and phase response and pole-zero plots. Back to Top
Integrated Products FDATool seamlessly integrates additional functionality from other MathWorks™ products as described in the following table.
Product
Added Features
TI's C2000™
code to TI's C2000 DSP target board
Filter Design HDL Coder™
Generate synthesizable VHDL or Verilog for fixed-point filters
Filter Design Toolbox Advanced FIR and IIR design techniques (see Advanced Filter Design Methods) Filter transformations Multirate filters ®
Fixed-point filters (available only with Simulink Fixed Point™ product) Embedded IDE Link™
Export code usable by Code Composer Studio™ software
Signal Processing Blockset
Generate equivalent Signal Processing Blockset™ block for the filter
Simulink
Generate filters from atomic Simulink blocks
Back to Top
Filter Design Methods
2013-01-17 8:39 PM
Overview :: FDATool: A Filter Design and Analysis GUI (Signal Proces...
2 of 4
jar:file:///G:/PROGRAM%20FILE/MATLAB%20R21010a/help/toolbox...
FDATool gives you access to the following Signal Processing Toolbox filter design methods.
Design Method
Function
Butterworth
butter
Chebyshev Type I
cheby1
Chebyshev Type II
cheby2
Elliptic
ellip
Maximally Flat
maxflat
Equiripple
firpm
Least-squares
firls
Constrained least-squares fircls Complex equiripple
cfirpm
Window
fir1
When using the window method in FDATool, all Signal Processing Toolbox window functions are available, and you can specify a -defined window by entering its function name and input parameter.
Advanced Filter Design Methods The following advanced filter design methods are available if you have Filter Design Toolbox software.
Design Method
Function
Constrained equiripple FIR
firceqrip
Constrained-band equiripple FIR
fircband
Generalized remez FIR
firgr
Equripple halfband FIR
firhalfband
Least P-norm optimal FIR
firlpnorm
Equiripple Nyquist FIR
firnyquist
Interpolated FIR
ifir
IIR comb notching or peaking
iircomb
2013-01-17 8:39 PM
Overview :: FDATool: A Filter Design and Analysis GUI (Signal Proces...
3 of 4
Design Method
Function
All filter (given group delay)
iirgrpdelay
Least P-norm optimal IIR
iirlpnorm
Constrained least P-norm IIR
iirlpnormc
Second-order IIR notch
iirnotch
jar:file:///G:/PROGRAM%20FILE/MATLAB%20R21010a/help/toolbox...
Second-order IIR peaking (resonator) iirpeak
Back to Top
Using the Filter Design and Analysis Tool There are different ways that you can design filters using the Filter Design and Analysis Tool. For example: You can first choose a response type, such as band, and then choose from the available FIR or IIR filter design methods. You can specify the filter by its type alone, along with certain frequency- or time-domain specifications such as band frequencies and stopband frequencies. The filter you design is then computed using the default filter design method and filter order. Back to Top
Analyzing Filter Responses Once you have designed your filter, you can display the filter coefficients and detailed filter information, export the coefficients to the MATLAB workspace, and create a C header file containing the coefficients, and analyze different filter responses in FDATool or in a separate Filter Visualization Tool (fvtool). The following filter responses are available: Magnitude response (freqz) Phase response (phasez) Group delay (grpdelay) Phase delay (phasedelay) Impulse response (impz) Step response (stepz) Pole-zero plots (zplane) Zero-phase response (zerophase) Back to Top
Filter Design and Analysis Tool s The Filter Design and Analysis Tool has sidebar buttons that display particular s in the lower half of the tool. The s are Design Filter. See Choosing a Filter Design Method for more information. You use this to Design filters from scratch. Modify existing filters designed in FDATool. Analyze filters. Import filter. See Importing a Filter Design for more information. You use this to Import previously saved filters or filter coefficients that you have stored in the MATLAB workspace. Analyze imported filters. Pole/Zero Editor. See Editing the Filter Using the Pole/Zero Editor. You use this to add, delete, and move
2013-01-17 8:39 PM
Overview :: FDATool: A Filter Design and Analysis GUI (Signal Proces...
4 of 4
jar:file:///G:/PROGRAM%20FILE/MATLAB%20R21010a/help/toolbox...
poles and zeros in your filter design. If you also have Filter Design Toolbox product installed, additional s are available: Set quantization parameters — Use this to quantize double-precision filters that you design in FDATool, quantize double-precision filters that you import into FDATool, and analyze quantized filters. Transform filter — Use this to change a filter from one response type to another. Multirate filter design — Use this to create a multirate filter from your existing FIR design, create CIC filters, and linear and hold interpolators. If you have Simulink installed, this is available: Realize Model — Use this to create a Simulink block containing the filter structure. See Exporting to a Simulink Model for more information. Back to Top
Getting Help At any time, you can right-click or click the What's this? button, , to get information on the different parts of the tool. You can also use the Help menu to see complete Help information. Back to Top Was this topic helpful?
FDATool: A Filter Design and Analysis GUI
Yes
No
Opening FDATool
© 1984-2010 The MathWorks, Inc. • of Use • Patents • Trademarks • Acknowledgments
2013-01-17 8:39 PM
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