What is the roll-off switch on my microphone and what do the straight line and bent line at the switch mean?
This is referred to as a low-cut filter, bass roll off, low-requency roll off or a high-pass filter. This switch enables internal circuitry that filters frequencies from the audio signal below the specified frequency. Enabling this switch can help filter out sounds in the low frequency range such as HVAC rumbles and certain wind sounds (in an outdoor application). Please note this filter does not completely cut all low frequencies. The straight line means that nothing is being filtered; the bent line means the filters are enabled.
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