Final Cut Pro X Logic Effects - Channel EQ Parameters

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Channel EQ Parameters

The left side of the Channel EQ window features the Gain and Analyzer controls. The
central area of the window includes the graphic display and parameters for shaping each
EQ band.

Channel EQ Gain and Analyzer Controls

Master Gain slider and field: Sets the overall output level of the signal. Use it after

boosting or cutting individual frequency bands.

Analyzer button: Turns the Analyzer on or off.

Pre/Post EQ button: Determines whether the Analyzer shows the frequency curve before

or after EQ is applied, when Analyzer mode is active.

Resolution pop-up menu: Sets the sample resolution for the Analyzer, with the following

menu items: low (1024 points), medium (2048 points), and high (4096 points).

Channel EQ Graphic Display Section

Band On/Off buttons: Click to turn the corresponding band on or off. Each button icon

indicates the filter type:


Chapter 3


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Band 1 is a highpass filter.

Band 2 is a low shelving filter.

Bands 3 through 6 are parametric bell filters.

Band 7 is a high shelving filter.

Band 8 is a lowpass filter.

Graphic display: Shows the current curve of each EQ band.

• Drag horizontally in the section of the display that encompasses each band to adjust

the frequency of the band.

• Drag vertically in the section of the display that encompasses each band to adjust

the gain of each band (except bands 1 and 8). The display reflects your changes

• Drag the pivot point in each band to adjust the Q factor. Q is shown beside the cursor

when it is moved over a pivot point.

Channel EQ Parameter Section

Frequency fields: Adjust the frequency of each band.

Gain/Slope fields: Set the amount of gain for each band. For bands 1 and 8, this changes

the slope of the filter.

Q fields: Adjust the Q factor or resonance for each band—the range of frequencies

around the center frequency that are affected.

Note: The Q parameter of Band 1 and Band 8 has no effect when the slope is set to
6 dB/Oct. When the Q parameter is set to an extremely high value, such as 100, these
filters affect only a very narrow frequency band and can be used as notch filters.

Link button: Activates Gain-Q coupling, which automatically adjusts the Q (bandwidth)

when you raise or lower the gain on any EQ band, to preserve the perceived bandwidth
of the bell curve.

Analyzer Mode buttons (Extended Parameters area): Choose Peak or RMS.

Analyzer Decay slider and field (Extended Parameters area): Adjust the decay rate (in dB

per second) of the Analyzer curve (peak decay in Peak mode or an averaged decay in
RMS mode).

Gain-Q Couple Strength pop-up menu (Extended Parameters area): Choose the amount

of Gain-Q coupling.

• Choose “strong” to preserve most of the perceived bandwidth.

• Choose “light” or “medium” to allow some change as you raise or lower the gain.

• The asymmetric settings feature a stronger coupling for negative gain values than

for positive values, so the perceived bandwidth is more closely preserved when you
cut, rather than boost, gain.


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Note: If you play back automation of the Q parameter with a different Gain-Q Couple
setting, the actual Q values will be different than when the automation was recorded.