User`s guide

13 DSP Blockset 4.1 Release Notes
13-2
New Features
This section introduces the new features and enhancements added in the DSP
Blockset 4.1 (Release 12.1) since DSP Blockset 4.0 (Release 12.0).
For information about the DSP Blockset features incorporated in recent
releases, see the following documents:
•Release Notes for Release 12
•DSP Blockset
Readme.m file — Open by typing whatsnew dspblks or
info dspblks at the MATLAB command line.
The DSP Blockset 4.1 new features are discussed in detail in the following
sections:
•“New Digital Filter Design Block” on page 13-2
•“Major Individual Block Enhancements” on page 13-3
•“Blocks with Enhanced Data Type Support” on page 13-5
•“Blocks with Tunability Enhancements” on page 13-7
•“Enhancements to Blocks Implemented with S-Functions” on page 13-7
•“Real-Time Workshop Generated C Code Enhancements” on page 13-8
•“Changes to Filtering Block Libraries” on page 13-9
•“New and Renamed DSP Blockset Directories” on page 13-10
New Digital Filter Design Block
The new Digital Filter Design block integrates the Filter Design and Analysis
Tool graphical user interface (FDATool) with the DSP Blockset.
Double-clicking the block opens FDATool, which you can use to quickly design,
import, or directly specify a digital FIR or IIR filter. Using the specified filter,
the block filters the input signal and outputs the result.
Currently, the Digital Filter Design block only supports direct-form II
transposed filter structures, so the block converts the structures of all imported
filters to direct-form II transposed. In addition, the block does not support the
Set Quantization Parameters tab, which is usually available in FDATool
when you install the Filter Design Toolbox.