Samsung UN60ES7500FXZA - Manual (Page 437)

should be below 40 decibels for
Voice Control to work properly.
Mic & Speaker Test : Select Start
with your remote to begin the Mic &
Speaker Test . A melody will play on
your TV during this test. This measures
the noise in the room against the
volume of your TV speakers.
N If you have external speakers
connected this test may not run