Noise Gate Audio Filter

This filter uses the Steve Harris LADSPA Gate plugin, whose parameters are based on the Drawmer DS201.

This filter is used to reduce some noise like a hum or echo or to reduce cross-talk between microphones that were targeting different sources.

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Key Filter: Low Frequency

Controls the cutoff of the low frequency filter (highpass).

Key Filter: High Frequency

Controls the cutoff of the high frequency filter (lowpass).

Output Key Only

Controls output monitor. When checked, it is the output of the key filters (so you can check what is being gated on). Otherwise, it is the normal, gated output. Disable the filter in Shotcut’s list of filters to achieve bypass (or trim the filter to bound it by a time range).

Threshold

Controls the level at which the gate will open.

Attack

Controls the time the gate will take to open fully.

Hold

Controls the minimum time the gate will stay open for.

Decay

Controls the time the gate will take to close fully.

Range

Controls the difference between the gate’s open and closed state.

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