Sony DSX-M80 Operating Instructions Manual page 125

Help Guide
Marine Audio
DSX-M80
Echo or noise occurs in phone call conversations.
Lower the volume.
Set EC/NC Mode to [EC/NC-1] or [EC/NC-2].
If the ambient noise other than the phone call sound is loud, try reducing this noise.
E.g.: If a window is open and outside noise, etc., is loud, shut the window. If an air conditioner is loud, lower the air
conditioner.
Related Topic
Available Operations during Call
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