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Version 2.50 is out since Jan 1st 2022

Frequently Asked Questions


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Formatting Syntax



The ReadSoundSensor function reads the sound pressure level (loudness) of the sound currently being 'heard' by the sound sensor (Note: Sound sensors are not included with the standard NXT kit)

The input parameter should be an NXT input port number between 1 and 4 (which the sound sensor is plugged into).

The mode parameter should be one of the following values: “DB” or “DbA” depending if you want the returned value in standard Decibels or A-weighted Decibels.

spl = nxt.ReadSoundSensor( input, mode );

Example - Read sound level on port 1

function OnStart()
  nxt = app.CreateNxt();
  app.SetMenu( "Connect,Sound Level" );
function OnMenu( name )
  if( name=="Connect" )
  else if( name=="Sound Level" )
    spl = nxt.ReadSoundSensor( 1, "dB" );
    app.ShowPopup( spl );
built_in/nxt_readsoundsensor.txt · Last modified: 2015/03/10 00:16 (external edit)