You can set the microphone sensitivity for the built-in microphone. Set this menu item before you start recording.
You can select one of the menu items available.
High:
To record a sound far away from the IC recorder or a low sound, such as recording in a spacious room.
Medium:
To record the sound of a normal conversation or meeting, such as recording in a meeting space or during interview.
(Initial setting)
Low:
To record dictation with a microphone in front of your mouth, a sound near the IC recorder, or a loud sound.