Re: OT? ambient sound louder when using bluetooth earbuds. Why?

micky, 2024-08-16 20:00:

OT?   ambient sound louder when using bluetooth earbuds. Why? 
 
They are not ambient sound amplifiers but bluetooh only.
 
I have found that if I scratch my head when wearing bluetooth earbuds,
the sound is louder than when I'm not.   FWIW I have hair.  I was

Because when you cover your ears with earbuds, the sound waves
travelling through your scull and into the ear canals can not escape
there but will be reflected back, thus you hear the sound louder.

How does the sound of my scratching my scalp get into the earbuds?

Bone conduction followed by reflection in your ear canals.

--
Arno Welzel
https://arnowelzel.de