Filter Design Toolbox 4.6

Latest Features

Version 4.6

Released: 04 Sep 2009
 

Version 4.6, part of Release 2009b, includes the following enhancements:

• Single-rate and multirate fixed-point FIR filter optimization with noise shaping to minimize or constrain coefficient wordlength and maximize stopband attenuation
• Support in fdesign and filterbuilder for parametric equalizer filter designs based on the quality factor or shelving slope parameter
• Support in fdesign and filterbuilder for multirate pulse shaping filters and zero-phase Nyquist equiripple filters
• Pulse shaping filter and comb filter support in the Simulink dspfdesign library
• Support in filterbuilder for peaking and notching IIR comb filters

See the Release Notes for details.

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Version 4.5

Released: 06 Mar 2009
 

Version 4.5, part of Release 2009a, includes the following enhancements:

• New peaking and notching IIR comb filters in fdesign
• New maximum phase option for equiripple designs (Low Pass, High Pass, Band Pass, Band Stop) in fdesign
• Support for round and convergent rounding modes in realizemdl/block methods and filterbuilder GUI wizard

See the Release Notes for details.

Version 4.4

Released: 09 Oct 2008
 

Version 4.4, part of Release 2008b, includes the following enhancements:

• New fdesign object support for the following filter types: raised-cosine and square-root raised-cosine, maxflat FIR and IIR lowpass, maxflat FIR highpass, and constrained least-squares FIR lowpass, highpass, bandpass and bandstop
• OptimizeScaleValues property added to dfilt second-order sections object, provides control of skipping multiplication-by-1

See the Release Notes for details.

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.

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.