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– When the use of privately owned earphones is prohibited
inside the plane.
• The noise-canceller function is designed to reduce noise
primarily in the low-frequency range, and is not effective at
reducing high-frequency noise.
• If the earphone tips do not correctly match the size and
contours of your ears, excessive sound may escape, or you
may sense insufficient bass sound, and the effect of the
noise-canceling function may be reduced. Always select and
use the earphone tips that best match the size of your ears.
• If the earphones’ microphone is covered with your hand or
other object, feedback may be caused, resulting in a
“howling” sound. In this case, remove your hand or other
obstruction from the microphone.
SE-NC31C_en_NA.fm 9 ページ ２０１０年８月２日 月曜日 午前１１時１７分