Version 6.7 (R2008a) Signal Processing Blockset™ Software Release Notes

Version 6.7 (R2008a) Signal Processing Blockset Software

This table summarizes what's new in Version 6.7 (R2008a):

New features and changes introduced in this version are

• Increased N-Dimensional Support

• Parameter Data Types Upgrade

• From Audio Device and To Audio Device Blocks Generate Code on More Platforms

• FIR Interpolation Block Improved for Frame-Based Signals

• Delay Line Block Allows Selective Enabling of Output

• Increased Scaled Doubles Support

• Spectrum Scope Allows Relabeling of X-Axis Scale

• Levinson-Durbin Block Coefficients Can Have Different Word Lengths

• Reference Port Added to Frame Conversion Block

• Tunability Status Changed for Stack and Queue Blocks

• DSP Constant Block Removed in Favor of Constant Block

• Matrix Concatenation Block Renamed to Matrix Concatenate

• New and Updated Demos

• Obsolete Blocks

Increased N-Dimensional Support

The following blocks now support N-D signals:

• Autocorrelation

• Convolution

• Correlation

• Delay

• Histogram

• Mean

• Median

• RMS

• Standard Deviation

• Variable Fractional Delay

• Variable Integer Delay

• Variance

Parameter Data Types Upgrade

Edit boxes on all Signal Processing Blockset blocks now support all built-in MATLAB data types except char and Boolean.

From Audio Device and To Audio Device Blocks Generate Code on More Platforms

The From Audio Device and To Audio Device blocks can now generate code on any platform supported by MATLAB except Solaris™ platforms.

FIR Interpolation Block Improved for Frame-Based Signals

The FIR Interpolation block now uses less memory and is more efficient for frame-based signals when the Framing parameter is set to Maintain input frame rate.

Delay Line Block Allows Selective Enabling of Output

The Delay Line block now supports selective enabling of the block output for increased efficiency when you select the Show En_Out port for selectively enabling output parameter. This allows the block to be more efficient in applications for which the block output does not always need to be valid.

Increased Scaled Doubles Support

The following blocks now support the scaled doubles data type:

• Discrete Impulse

• Identity Matrix

• Sine Wave

• Window Function

Spectrum Scope Allows Relabeling of X-Axis Scale

The Axis Properties pane of the Spectrum Scope block now has the Display DC as parameter. This parameter allows you to specify a new label for the DC frequency (0 Hz) along the x-axis of your scope, which is desirable in modulated carrier applications.

Levinson-Durbin Block Coefficients Can Have Different Word Lengths

The polynomial coefficients (A) and reflection coefficients (K) of the Levinson-Durbin block are no longer constrained to have the same word length.

Reference Port Added to Frame Conversion Block

The Frame Conversion block now has a Ref port that allows you to inherit the output sampling mode from an input signal.

Tunability Status Changed for Stack and Queue Blocks

The parameters of the Stack and Queue blocks are no longer tunable.

Compatibility Considerations

All parameters of the Stack and Queue blocks that were previously tunable during simulation are no longer tunable. To change these parameters while you are working with a model, you must stop a running simulation, change the parameter, and then start the simulation again.

DSP Constant Block Removed in Favor of Constant Block

The DSP Constant block has been removed. Use the Simulink Constant block instead.

Compatibility Considerations

Use slupdate to replace DSP Constant blocks with Simulink Constant blocks in your models.

Matrix Concatenation Block Renamed to Matrix Concatenate

The Matrix Concatenation block has been renamed Matrix Concatenate. The functionality of this block has not changed.

New and Updated Demos

The following demos are new in this release. Enter the commands provided to open each demo from the MATLAB command line:

• Synthetic Aperture Radar — SarImageFormation

• Positional Audio — dspAudioPos

• Audio Special Effects — dspaudioeffects

The following demos are updated in this release:

• Internet Low Bitrate Codec (iLBC) for VoIP — dspilbc

• Pitch Shifting and Time Dilation Using a Phase Vocoder — dsppitchtime

• Radar Tracking — aero_radmod_dsp

• WWV Digital Receiver — dspwwv

Obsolete Blocks

The Kalman Adaptive Filter and Triggered Delay Line blocks are now obsolete.

Compatibility Considerations

Replace Kalman Adaptive Filter blocks in your models with the Kalman Filter block. Replace Triggered Delay Line blocks with a Delay Line block inside a Triggered Subsystem.

Version 6.8 (R2008b) Signal Processing Blockset Software

Version 6.6 (R2007b) Signal Processing Blockset Software