3. Sonogram

To generate the sonogram of the loaded aedat file, click on Tools->Sonogram or on the button of the vertical toolbar that can be seen in the next image.

A new window with the output of the sonogram will open. This output can be seen in the next image. The image represents the spike rate of both left and right cochlea in a color map, where X axis is time, Y axis is the cochlea channel, and the color is the spike rate of the channel in a particular time period (Integration period, which can be set in the settings).

Red represents the highest spike rate and blue the lowest one, green being in the middle. Although the highest spike rate is a value that cannot be changed (197 in the image), the scrollbar gives the user the opportunity to swap the maximum value set as red to a different one. The user can also save the image to a PNG file or reset the scrollbar to its default value.

The pseudocode of this functionality is shown in the image below.