Signal Processing Toolbox

Filter Visualization Tool

You can use the Filter Visualization Tool (fvtool) to analyze the following response characteristics of selected filters:

• Magnitude response
• Phase response
• Impulse response
• Step response
• Group delay
• Phase delay
• Pole and zero locations
• Detailed filter information

FVTool also provides features for

• Overlaying filter responses
• Zooming
• Measuring filter responses
• Modifying display parameters such as frequency ranges or magnitude units

If you start FVTool by clicking the SPTool Filter View button, that FVTool is linked to SPTool. Any changes made in SPTool to the filter are immediately reflected in FVTool. The FVTool title bar includes "SPTool" to indicate the link.

If you start an FVTool by clicking the New button or by selecting File-->New from within FVTool, that FVTool is a stand-alone version and is not linked to SPTool.

Note    Every time you click the Filter View button a new, linked FVTool starts. This allows you to view multiple analyses simultaneously.

Opening the Filter Designer

Opening the Filter Visualization Tool

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