Audio Compressor, Expander and Limiter Simplified Explanation

Audio engineering seems alien to most Videographers.  But audio is so important in any video that we cannot ignore it.  Here are three audio adjustment filters you must know to make your audio sound better… (my totally simplified definition).

  1. Compressor:  Lowers the loudest volume. Raises the quietest volume. 
  2. Expander: Raises the quietest volume without lowering or raising the loudest volume. 
  3. Limiter: Sets the loudest volume level, so no volume can go over it.
Use each or a combination of the filters for different types of audio (voice, music, etc).


Adrian Lee
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