Signal Processing Toolbox Release Notes

Chapter 1
Signal Processing Toolbox 6.3 Release Notes

New Features

The following new features and enhancements have been added to the Signal Processing Toolbox Version 6.3.

New spectrogram Function

This function replaces the grandfathered specgram function. It uses new default values and the order of the inputs has changed. If you use this function with no outputs, a surface plot is dispayed, instead of an image. See spectrogram for more information.

New gaussfir Function

This function replaces the grandfathered firgauss function. gaussfir uses parameters that are common to communications systems. See gaussfir for more information.

FDATool Enhancements

Tip of the Day

A new Tip of the Day dialog displays when you start FDATool. It contains tips and hints for using FDATool.

Spectral Rejection Masks

You can draw lines on your filter response in FDATool to indicate rejection areas.

Generated C Header File Complex Filter Support

FDATool now supports generating C header files for complex filters.

Analysis Parameters

Three new options have been added to the Analysis Parameters for magnitude response displays. These options are also available in FVTool.

• Normalize Magnitude to 1 (0 dB) -- displays the magnitude so that the maximum magnitude value occurs at 0 dB
• Autoscale axes -- automatically scales the response data y-axis
• dB Display Range -- If you are not using autoscale and the magnitude display is in dB, this allows you to specify the y-axis limits, .

FVTool Enhancements

SOS Filter Coefficients Display

The coefficient view in FVTool now displays each section of a second-order section filter as a separate filter with its own numerator, denominator, and gain.

New Demos

The Signal Processing Toolbox demos have been reorganized and a new demo on the analysis of a numerically controlled oscillator (NCO) has been added.

Signal Processing Toolbox Release Notes

Major Bug Fixes

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