Filter Design Toolbox™ 4.3

Latest Features

Version 4.3

Released: 01 Mar 2008
 

Version 4.3, part of Release 2008a, includes the following enhancements:

• fdesign support for highpass halfband filters
• fdesign support for Farrow sample rate converters
• realizemdl support for polyphase and Farrow sample rate converters
• Input quantization added to models generated by the block method

See the Release Notes for details.

Update Now

• Download the latest version if your software maintenance service is current.
• Purchase or request a renewal quote if your maintenance service has lapsed.
• Try the latest version by downloading or requesting trial software.

---

Version 4.2

Released: 01 Sep 2007
 

Version 4.2, part of Release 2007b, includes the following enhancements:

• Support for complex coefficients in all FIR structures in MFILT
• New multirate Farrow filter capable of sample rate conversion
• Support for cascading of MFILTs and DFILTs with Farrow filters
• Updated documentation with new section about using integers with FIR filters

See the Release Notes for details.

Version 4.1

Released: 01 Mar 2007
 

Version 4.1, part of Release 2007a, includes the following enhancments:

• Fdesign support for octave band and fractional octave band filters
• Fdesign support for parametric equalizer filters
• Arbitrary magnitude and phase added to multirate filters
• Fdesign support for notch and peak filters
• Support for fixed-point inputs and tunable parameters in Filter Design Toolbox blocks

See the Release Notes for details.

Version 4.0

Released: 01 Sep 2006
 

Version 4.0, part of Release 2006b, includes the following enhancments:

• Blocks for designing filters added to Signal Processing Blockset (Filter Design Toolbox required to use the new blocks to design and implement filters)
• Support for automated conversion of floating-point filters to fixed-point, based on input data
• Support for designing floating-point and fixed-point fractional-delay Farrow filters
• New filterbuilder function for interactive filter design
• Support for designing lattice wave digital filters
• Scaled doubles logging
• New freqrespest function for using filtering to estimate the filter frequency response from measured data
• Parallel filter objects support multirate filters

See the Release Notes for details.

Version 3.4

Released: 01 Mar 2006
 
Version 3.4, part of Release 2006a, includes the following enhancements:

• Support for designing Farrow Filters
• Support for designing Arbitrary Magnitude and Phase Filter
• Cost Method for estimating computational complexity of filters
• Full-precision support for fixed-point CIC filters
• New design methods for Hilbert Transformers

See the Release Notes for details.

Version 3.3

Released: 01 Sep 2005
 

Version 3.3, part of Release 14 with Service Pack 3, includes the following enhancements:

• Fdesign objects, providing a new filter design methodology
• Ability to design multistage filters and CIC filters with compensators
• Support for designing arbitrary magnitude response filters

See the Release Notes for details.

Version 3.2

Released: 07 Mar 2005
 

• Updated fixed-point FIR filter objects to closely match the multirate filter objects: dfilt.dfasymfir, dfilt.dffir, dfilt.dffirt, dfilt.dfsymfir
• Added fixed-point filtering support to two multirate interpolators mfilt.holdinterp and mfilt.linearinterp
• Added context-sensitive help for the quantization, frequency transformation, and multirate filter design panels in Filter Design and Analysis Tool (FDATool)

Version 3.2, part of MathWorks Release 14 with Service Pack 2, also includes bug fixes. See the Release Notes for details.

Version 3.1

Released: 22 Sep 2004
 

• CIC decimator/interpolators support arbitrary wordlengths (greater than 32 bit support).
• FIR Decimation, interpolation, and sample-rate conversion filters now support fixed-point arithmetic and single-precision floating-point arithmetic.
• All multirate filters now support sample-by-sample processing.

Version 3.0

Released: 02 Jun 2004
 

• Extensive support for second order-section IIR filters, including design, reordering, scaling, graphical analysis, and fixed-point implementation
• Ability to cascade several multirate filters together, as well as the ability to cascade single-rate and multirate filters
• Enhanced fixed-point filter simulation, analysis, and integration with the Signal Processing Blockset
• New and improved FIR filter design functions including constrained-ripple design
• Improvements to the FDATool including more advanced filter design methods, a multirate filter creation panel, a redesigned quantization panel, enhanced SOS reordering/scaling dialog
• VHDL and Verilog code generation for fixed-point filters with the Filter Design HDL Coder