FFmpeg 6.1.2
Since* 5.0
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Apply spectral tilt filter to audio stream.

This filter apply any spectral roll-off slope over any specified frequency band.

The filter accepts the following options:

freq

Set central frequency of tilt in Hz. Default is 10000 Hz.

slope

Set slope direction of tilt. Default is 0. Allowed range is from -1 to 1.

width

Set width of tilt. Default is 1000. Allowed range is from 100 to 10000.

order

Set order of tilt filter.

level

Set input volume level. Allowed range is from 0 to 4. Defalt is 1.

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Commands

This filter supports the all above options as commands.