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docs: Add microphone.sound_level_db() function. #803

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2 changes: 2 additions & 0 deletions docs/microbit_micropython_api.rst
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Expand Up @@ -108,6 +108,8 @@ The Microphone is accessed via the `microphone` object::
set_threshold(128)
# Returns a representation of the sound pressure level in the range 0 to 255.
sound_level()
# Returns a representation of the sound pressure level in decibels (dB).
sound_level_db()

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4 changes: 4 additions & 0 deletions docs/microphone.rst
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Expand Up @@ -91,6 +91,10 @@ Functions

:return: A representation of the sound pressure level in the range 0 to 255.

.. py:function:: sound_level_db()

:return: A representation of the sound pressure level in decibels (dB)
in the range of 52.0 to 110.0 dB.

Example
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