48 lines
1.5 KiB
Markdown
48 lines
1.5 KiB
Markdown
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# set Sound Threshold
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Tell how loud it should be for your board to detect a loud sound.
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```sig
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input.setSoundThreshold(SoundThreshold.Loud, 0)
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```
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When the microphone hears a sound, it sets a number for how loud the sound was at that moment.
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This number is the sound level and has a value from `0` (low sound) to `255` (loud sound). You can use
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a sound level number as a _threshold_ (just the right amount of sound) to make the
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[on sound](/reference/input/on-sound) event happen. To set a threshold, you choose the type of sound
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to detect, `loud` or `quiet`, and then the sound level for that type.
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### ~ reminder
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This block requires the [micro:bit V2](/device/v2) hardware. If you use this block with a micro:bit v1 board, you will see the **927** error code on the screen.
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### ~
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## Parameters
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* **sound**: the type of sound to dectect: `loud` or `quiet`.
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* **threshold**: the sound level [number](/types/number) which makes a sound event happen.
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## Example #example
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Show an icon animation when the microphone detects a sound louder than a sound level of `200`.
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```blocks
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input.setSoundThreshold(SoundThreshold.Loud, 200)
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input.onSound(DetectedSound.Loud, function () {
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basic.showIcon(IconNames.Square)
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basic.showIcon(IconNames.SmallSquare)
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basic.showIcon(IconNames.SmallDiamond)
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basic.clearScreen()
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})
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```
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# See also #seealso
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[on sound](/reference/input/on-sound), [sound level](/reference/input/sound-level)
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```package
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microphone
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```
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