Zoom F8n Pro 8-Input / 10-Track Multitrack Field Recorder - Manual (Page 55)

Cutting low-frequency noise (HPF)
The high pass filter can cut low frequencies to reduce the sound of wind, vocal pops and other noise.
1.
Press .
This opens the Menu Screen.
2.
Use to select “INPUT”, and press .
3.
Use to select “HPF”, and press .
4.
Use to select a track, and press .
HINT:
Select “All” to set all the tracks at the same time.
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