Audio effects in Compressor

When you add an audio effect to a preset in Compressor, you can choose from the effects listed below.

Note: Audio effects are not available in some presets when the “Enable audio pass-through” checkbox is selected in the Audio inspector.

Audio effect				Description
Apple: AUGraphicEQ				Configures a wide variety of frequencies throughout the audible frequency range. Click Options to open the graphic equalizer window, then choose either a 31-band version or a 10-band version from the pop-up menu at the bottom. Adjust frequencies by doing any of the following: Drag a slider to adjust the level of a frequency band. Select a frequency slider and then type a number in the dB field (in the lower-right corner of the graphic equalizer window). Click Flatten EQ to set all bands to a 0.0 dB value. Drag to select multiple bands and then adjust the group. Hold down the Control key while dragging across the bands to “draw” an equalization curve.
Dynamic Range				Controls audio levels by enhancing the quieter parts and lowering the louder parts. This is also referred to as audio level compression. This effect has the following properties: Soften above: Drag the slider to set the level at which audio is reduced to the level set by the “Overall gain” control. Noise threshold: Drag the slider to set the level at which the effect is applied. Audio at and above the noise threshold is dynamically boosted to the level set by the “Overall gain” control, and audio below the noise threshold is not modified. Overall gain: Drag the slider to set the average level of the dynamically compressed audio.
Fade In/Out				Adds an audio fade-in effect at the beginning of the clip and a fade-out at the end of the clip. This effect has the following properties: Fade in duration/Fade out duration: Enter a time in the text field to set the duration of the fade-in and fade-out effects. Fade in gain/Fade out gain: Drag the sliders between –100.0 (silence) and 0.0 (the audio’s volume) to set the audio volume at the start and end of the clip.
Peak Limiter				Sets the level of the loudest audio allowed in the clip. Drag the Gain slider to set the level above which louder peaks are reduced.

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Compressor User Guide

Audio effects in Compressor