docs: Add microphone.sound_level_db() function.

bbcmicrobit · May 7, 2024 · 9e9ea1c · 9e9ea1c
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diff --git a/docs/microbit_micropython_api.rst b/docs/microbit_micropython_api.rst
@@ -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()
 
 Pins
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diff --git a/docs/microphone.rst b/docs/microphone.rst
@@ -91,6 +91,9 @@ 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).
 
 Example
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