Olympus DS-30 Instructions Manual page 95

Set the Voice Filter (Voice Filter)
The recorder has a Voice Filter Function to cut low and high frequency tones during normal,
fast, or slow playback, and enable clear audio playback.
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1
While the recorder is stopped or
during playback, press the MENU
button for 1 second or longer.
The menu opens. (☞ P60, 62)
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2
Press the or
"Voice Filter".
Press the OK or 9 button.
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The voice filter setup process begins.
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4
Press the or
between "On" and "Off".
On: Voice Filter will be turned on.
Off: Voice Filter will be canceled.
If the recorder goes to the menu screen during
playback, move the cursor to change playback
sound accordingly.
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Press the OK button to complete the
setup screen.
If the 0 button is pressed, the setting will
be canceled and it will return to the menu.
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button to choose
–
button to choose
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