> For the complete documentation index, see [llms.txt](https://makeroid.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://makeroid.gitbook.io/docs/components/lego-mindstorms/nxt-sound-sensor.md).

# NXT Sound Sensor

A component that provides a high-level interface to a sound sensor on a LEGO MINDSTORMS NXT robot

## Properties

### BluetoothClient

The BluetoothClient component that should be used for communication. Must be set in the Designer

### SensorPort

The sensor port that the sensor is connected to. Must be set in the Designer

### BottomOfRange

The bottom of the range used for the BelowRange, WithinRange, and AboveRange events.

### TopOfRange

The top of the range used for the BelowRange, WithinRange, and AboveRange events.

### BelowRangeEventEnabled

Whether the BelowRange event should fire when the sound level goes below the BottomOfRange.

### WithinRangeEventEnabled

Whether the WithinRange event should fire when the sound level goes between the BottomOfRange and the TopOfRange.

### AboveRangeEventEnabled

Whether the AboveRange event should fire when the sound level goes above the TopOfRange.

## Events

### BelowRange()

Sound level has gone below the range.

### WithinRange()

Sound level has gone within the range.

### AboveRange()

Sound level has gone above the range.

Methods

### GetSoundLevel ()

Returns the current sound level as a value between 0 and 1023, or -1 if the sound level can not be read.