Menus

  1. File: Export Coeffs: Workspace
  2. File: Export Coeffs: File
  3. File: Exit
  4. Edit: Show Radian Frequency
  5. Edit: Show Magnitude (dB)
  6. Options: Line Width
  7. Options: Zoom
  8. Options: Grid
  9. Help: Help menu

File: Export Coeffs: Workspace

This option helps to export filter coefficients to the MATLAB workspace. The user is asked to enter the variable names under which the numerator and the denominator coefficients are to be save.

Workspace variables can be determined by either opening MATLAB Workspace Viewer with command 'workspace' or by using the command 'who'.

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File: Export Coeffs: File

This option exports filter coefficients from the GUI into a MAT file. The default variables being exported are 'a' and 'b' for denominator and numerator filter coefficients respectively.

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File: Exit

This option can be used to gracefully exit from the Filter Design GUI.

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Edit: Show Radian Frequency

This option toggles the frequency from Hz to radian units. The x-axis of the plot changes from Hz to radians, where Fsamp / 2 mark becomes π. The filter design parameters FpassN and FstopN are displayed in radian units when this menu has been selected.

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Edit: Show Magnitude (dB)

This option toggles the filter magnitude from linear to dB. When selected, the y-axis of the plot and also the filter design parameters Rpass and Rstop are displayed in dB units.

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Options: Line Width

This option allows to interactively change the default line width used in all the plots.  This feature was implemented as a lecture aid since thin lines are sometimes hard to see from the back of a room when projecting an image of a computer screen.

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Options: Zoom

This option helps to 'Zoom in' within the Filter Design plot, to identify precise location of filter parameters.

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Options: Grid

This option will toggle the display of a grid.

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Help: Help

Selecting this option brings up the on-line help for the Filter Design GUI in an internet browser. i.e., this help document.

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