Loudness graph tab

The Loudness graph feature is used to display channel audio volume. Use the <History> dropdown to select graph time duration. The <Channels> setting expands/contracts the channel list, from there select a channel. This opens the media player and populates the bottom of the Settings pane with another icon titled Metrics. Clicking the <Metrics Chevron> displays all audio stream types. Hovering over the audio name displays a plus image icon. Press it to display a list of available graphs. If there are multiple audio programs you are able to graph each one.

Figure: Loudness graph

Figure: Loudness graph

In the Setting pane specify program Date and time. You can adjust the date/time by using the calendar feature of the player. If this option is left blank the player is opened in the mode specified in user preferences in the Tools menu. The example shown is live which is why the loudness graph does not extend all the way to the end. The History dropdown sets the maximum duration of the graph.

Figure: Loudness detail

Figure: Loudness detail

Positioning the cursor in the graph lets you zoom in on an area of interest and display the instantaneous loudness level. To examine the graph in more detail slide the bars at either end of the lower graph image to expand the upper graph. Once the graph is expanded use the left and right arrow keys of the lower graph to step through the entire range.

The graphs are color coded. Hovering over the graph identifies each color and the instantaneous value at the cursor position.

Graphing options

M measurement

Momentary sliding rectangular (.4s) integrated window - sampling every 100 milliseconds, calculating its average every 400 msec. These values are not configurable

S measurement

Short term sliding rectangular (3s) integration window - sampling every 100 milliseconds, calculating the average every 3 seconds; these values are not configurable

SI measurement

Short Integrated sampling every 100 milliseconds - MIS calculates the average every X seconds within up to 6 defined durations (usually left at the default value 10 seconds)

Speech_Exists

Binary True/False indication of speech

Speech_Level

Speech audio level

Min

Graph Minimum loudness level

Avg

Graph Average loudness level

Max

Graph Maximum loudness level

Range

Shades the area between min and max graph