Final Cut Pro X Logic Effects - Using the Linear Phase EQ Analyzer

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Using the Linear Phase EQ Analyzer

The Analyzer, when active, makes use of a mathematical process called a Fast Fourier
Transform (FFT) to provide a real-time curve of all frequency components in the incoming
signal. This is superimposed over any EQ curves you have set. The Analyzer curve uses
the same scale as the EQ curves, making it easy to recognize important frequencies in
the incoming audio. This also simplifies the task of setting EQ curves to raise or lower the
levels of frequencies or frequency ranges.

The bands derived from FFT analysis are divided in accordance with the frequency linear
principle—there are more bands in higher octaves than in lower ones.


Chapter 3


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As soon as the Analyzer is activated, you can change the scaling with the Analyzer Top
parameter, on the right side of the graphic display. The visible area represents a dynamic
range of 60 dB. Drag vertically to set the maximum value to anywhere between +20 dB
and −40 dB. The Analyzer display is always dB-linear.

Note: When choosing a resolution, be aware that higher resolutions require significantly
more processing power. High resolution is necessary when trying to obtain accurate
analysis of very low bass frequencies, for example. It is recommended that you disable
the Analyzer or close the Linear Phase EQ window after setting the appropriate
EQ parameters. This will free up CPU resources for other tasks.


Chapter 3


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The levels effects control the perceived loudness of your audio, add focus and punch to
clips, and optimize the sound for playback in different situations.

The dynamic range of an audio signal is the range between the softest and loudest parts
of the signal—technically, between the lowest and highest amplitudes. Dynamics
processors enable you to adjust the dynamic range of individual audio clips. This can be
to increase the perceived loudness and/or to highlight the most important sounds, while
ensuring that softer sounds are not lost in the mix.

This chapter covers the following:

Types of Dynamics Processors

(p. 63)

Adaptive Limiter

(p. 65)


(p. 66)


(p. 70)


(p. 72)

Gain Plug-in

(p. 73)


(p. 73)

Multichannel Gain

(p. 75)


(p. 75)

Noise Gate

(p. 78)

Spectral Gate

(p. 81)

Surround Compressor

(p. 83)

Types of Dynamics Processors

There are four types of dynamics processors included in Final Cut Pro. These are each
used for different audio processing tasks.

Compressors: Final Cut Pro features a number of downward compressors. These behave

like an automatic volume control, lowering the volume whenever it rises above a certain
level, called the threshold. So, why would you want to reduce the dynamic level?