Altering Peak To Average Ratio

The Music Telegraph | Text 2022/08/22 [13:27]

Altering Peak To Average Ratio

The Music Telegraph| 입력 : 2022/08/22 [13:27]

 

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Altering Peak To Average Ratio

 

In digital audio, there can be no signal voltage "overs", meaning there can be no signal louder than 16 (or 24 bits) of all ones. This is measured as 0 dBfs (Decibels relative to full scale). Beyond this level of encoded signal, you will get only digital distortion. You know to never record signal level beyond 0 dBfs. This means that your loudest sound should be no more than this maximum. But what if the 4-measure drum loop has just one cymbal hit that has a transient at the max level and all the rest is much lower? The overall sound power will be relatively low. What you would like to do is raise the low levels and/or lower the loud level. A compressor can be used to do just that. In technical terms, it is called 'altering the peak-to-average ratio (P/A ratio)'. By lowering the peak level you are moving all the levels closer to each other. This will result in a louder signal. It also allows the low levels to be heard in a mix. 

 

 

 

 

 

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