Samsung SGH-C414R User Manual page 5

How Does It Work?
Based on the intelligence of the human hearing system, the
technology:
Captures, evaluates and distinguishes all the sound signals surrounding
•
your phone, and the person you're speaking with.
Then isolates the primary voice in conversation and filters out the
•
background noise - so the person you're calling hears only your voice,
without disturbing background noise.
Dynamically equalizes and adjusts voice volume to optimize your calling
•
experience, so you can hear clearly and don't need to speak louder to
overcome surrounding noise.
The noise suppression technology is built-in and already enabled in
your new mobile phone. So it's ready to provide unsurpassed voice
clarity with every call.