| Signal Processing Toolbox |
  |
Overview of the Filter Viewer: Filter Analysis
You can use the Filter Viewer to analyze the following response characteristics of selected filters:
- Magnitude response
- Phase response
- Impulse response
- Step response
- Group delay
- Pole and zero locations
The Filter Viewer can display up to six different response characteristics plots for a selected filter at any time. The Filter Viewer provides features for:
- Zooming
- Measuring filter responses
- Overlaying filter responses
- Modifying display parameters such as frequency ranges or magnitude units
Opening the Filter Viewer
You can open the Filter Viewer from SPTool by:
- Selecting one or more filters in the Filters list in SPTool
- Pressing the View button under the Filters list
When you first open the Filter Viewer, it displays the default plot configuration for the selected filter(s).
The filters' magnitude and phase plots are displayed by default. In addition, the frequency is displayed with a linear scale on the interval [0,Fs/2].
The Filter Viewer has the following components:
- A Plots region for selecting the response plots you want to display in the display area, and for specifying some frequency response display characteristics
- A Frequency Axis region for specifying frequency scaling in the display area
- Marker buttons for making filter response measurements and comparisons
- A filter identification region that displays information about the currently selected filter(s)
- A display area for analyzing one or more frequency response plots for the selected filter(s)
- Zoom buttons to navigate the displays
| | Overview of the Filter Designer: Filter Design | | Overview of the Spectrum Viewer: Spectral Analysis | |