10.6

245Logic Pro Effects
Compressor parameters
The compression unit tightens up your audio by smoothing out dynamics and increasing
the overall volume.
• On/off button: Enable/disable the compressor effect.
• Amount knob and field: Set the level of compression.
• Release knob and field: Set the time it takes for the compression circuit to stop
reducing the signal.
• Type pop-up menu: Choose an emulated compressor circuit. The choices are Classic,
Clip, Platinum, Studio VCA and FET, Classic VCA, or Vintage VCA, FET, and Opto.
• FET models: Field Effect Transistor compressors are known for their fast transient
response. They can deliver a clean or colored tone (notably midrange), and can be
pushed toward a “crunchy” tone on transients. FET compressors are ideal for drums,
vocals, and guitars. FET compressors can only attenuate the signal.
• VCA models: Voltage Controlled Amplifier compressors can respond slowly or
quickly to incoming transients. They tend towards a clean tone and are suited for
bass guitars and low-frequency signals. VCA compressors can attenuate or amplify
the signal.
• Opto model: Optical compressors are known for their fast transient response and
non-linear release handling. They are very clean and are ideal for vocals and guitars.
Logic Pro Phat FX modulators
Phat FX modulators provide automatic control of Phat FX processor parameters. The
parameters of all Phat FX modulators are described in the respective sections below.
Changes by modulator parameters are reflected by blue rings and dots around target
parameter knobs, making it easy to identify a target parameter that is being modulated.
The rings indicate the range (modulation depth) and the dots indicate the current value of
the modulator. Realtime, manual XY pad modulation is also indicated in a similar way for
target parameters.