47 lines
1.1 KiB
Markdown
47 lines
1.1 KiB
Markdown
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# on Sound
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Run some code when the microphone hears a sound.
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```sig
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input.onSound(DetectedSound.Loud, function () {})
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```
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The microphone will detect sounds that are quiet or loud. You can have the microphone detect
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a sound at a certain level and run some code in and event when it hears the sound. There are
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two sound ranges you can detect for: `loud` or `quiet`.
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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 detect: `loud` or `quiet`.
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* **handler**: the code to run when a sound is heard.
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## Example
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Show an icon animation when the microphone detects a sound.
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```blocks
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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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[sound level](/reference/input/sound-level),
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[set sound threshold](/reference/input/sound-level)
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```package
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microphone
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```
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