Ln statistics may be enabled on the setup page. The cursor will show the red plot value in red, and the column value and frequency in black. The red text “Leq xx.x dB” refers to the overall Leq of the measurement, for the select measurement.
As you zoom into part of the measurement time window, this is the Leq for the bar over that time. If you are fully zoomed out, this is the same as the blue column.
#Decibel graph series#
If the cursor is not hovering over the red time series plot, these bars represent the SPL of the most recent measurement. Thin dark blue bar – If the cursor is positioned over the red plot, this is the octave or 1/3 value for the cursor position (time).Blue column – Leq for octave or 1/3 since the start of the measurement.Note that in addition to the fractional octaves, you can select Unweighted (Z), A or C. In octave and 1/3 octave mode, you can change which value this plot represents by using the control on the lower left of the screen. The red time series plot (jagged line) is the point by point SPL value over time. We use a unique combination of a time series and frequency plot to convey a lot of information on one screen.
#Decibel graph full#
Swiping across the graph brings up a cursor that displays the exact dB level and time for any point on the graph.Īs with all of our plots, double-tapping will zoom out to the full measurement. As the graph runs, the overall LEQ (average SPL) for the entire time period is computed and displayed on the screen. The time scale grid changes dynamically, highlighting minutes, ten-minute, and hour lines as as it runs. Double-tap the screen to zoom out to show the entire graph on the screen. Zoom out to a full 24 hours, or zoom in to a single minute, showing second resolution. You can also scroll and expand and contract the time axis using gestures. You can scroll and scale the graph vertically, in dB, by using standard swipe and pinch gestures. Use this feature to listen to events that you can see on the graph. Tap the “speaker” play button to play back the recorded audio, and use the cursor to scrub the audio location on the graph. The graph starts with a one-minute window, and as a minute is recorded, the graph re-scales automatically and adds another minute to show the data collected so far. Belgium, The Netherlands, and Luxembourg.LARSA – Loudspeaker And Room System Analyzer.
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