Audio filters – Apple Compressor (4.0) User Manual
Page 163
Chapter 7
Advanced functions
163
Audio filters
Compressor includes the following audio filters, located in the Audio tab of the Filters pane.
Important:
The audio filters are not available when audio is set to “Pass-through” in QuickTime
settings. For more information, see
on page 124.
Dynamic Range
Lets you dynamically control a clip’s audio levels by enhancing the quieter parts and lowering
the louder parts. This is also referred to as audio level compression (not to be confused with
video compression).
The Dynamic Range filter contains the following controls:
•
Soften Above: Sets the level at which audio is reduced (softened) to the level set by the
Master Gain control.
•
Noise Threshold: Sets the level of what is considered noise. Audio at this level and above is
dynamically boosted to the level set by the Master Gain. Audio below this level is left as is.
•
Master Gain: Sets the average level of the dynamically compressed audio.
Peak Limiter
Sets the level of the loudest audio allowed in the clip.
The Peak Limiter filter contains a single control:
•
Gain (dB): Sets the level above which louder peaks are reduced.