The compressor usually stops it in more fine ways, like with the option to set more parameters such as attack, release and knee functions, whereas the limiter does the job of stopping all sound at a given level, usually at 0 dBFS. So, audio compressors use the peaks or the immediate RMS levels (basically the general perceived volume of sound peaks) to stop sound from getting too loud. Audio compression & compressors / limiters This is either from the Peak Level or the RMS level of the file. Audio normalization is aimed at raising or lowering the entire file/recording to a certain level. Where compression/limiting is mostly aimed at handling the immediate dynamics and peaks, leveling usually does the job of changing the overall parts inside of an audio file to better match each other, producing a whole file that is better internally, as a block/clip. While they are aimed in the same direction, which is to even out the differences in volume and amplitude within an audio recording, they go a bout it in different ways or handle different aspects of the process. The 3 biggest conceptual methods for achieving a sound that is even and loud are called audio compression/limiting, audio leveling and audio normalization.Īudio compression (as in using an audio compressor, not lossy compression, like MP3) is not to be confused with normalization or leveling. This is especially important today as we have an audio landscape in media where sound plays a big part in how we perceive information and often the quality of a production, whether it´s a video clip, a movie / series or a song on the ether. The core concept of audio dynamics treatment is to level out the differences in amplitude in the recording at hand. Ever wondered why there are so many tools for treatment of volume and sound dynamics? Well this post aims to shine a light on why and what to use to get the proper job done.
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