Calculating a Loudness Colormap

This procedure shows how to calculate the loudness colormap from a temporal signal.
Note: This functionality can be accessed through the menu bar as Calculation > Calculate Loudness Colormap... or by choosing Calculate Loudness Colormap... from the context menu.
Prerequisites: To calculate loudness, you must already have a file containing a temporal signal measured in Pa. The menu option will only be visible if the unit of the signal is Pa.
To calculate specific loudness and generate a colormap:
  1. Open a temporal signal measured in Pa.
  2. Right-click the temporal signal.
  3. Choose Calculate Loudness Colormap... from the context menu.
    The Calculate loudness colormap dialog box is displayed.

  4. In the Signals to process list, select the temporal signal from which to calculate the loudness colormap.
  5. Depending on the type of field used for the recording, choose the type of Field that corresponds to your signal (Free field or Diffuse field) from the Field drop-down menu.
    Note: If you don’t know which type of field was used for the recording, leave the default setting, Free.
  6. Press the OK button.
The loudness colormap of the signal is displayed in its own window.