Silly question time...

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DAC
Digital to Analog Converter

- converts, decodes digital data description of sounds
from CD and DVD
into analog electrical signals,
that can be used feed to sound reproducers like speakers

in normal speaker electrical currents
are converted into physical, mechanical movements
using the electro magnetic force of coils

so are the air pressure changes hopefully in accordance with the electrical power in audio amplifier output
and we can hear these air pressure changes
with our sensors for this = ears
and we call them sound


lineup
 
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