Compressor Ratio Calculator
Calculate compression ratios and gain reduction
About this calculator
The Compressor Ratio Calculator helps audio engineers and producers determine compression ratios and calculate gain reduction values for dynamic range processing. This tool is essential for achieving consistent audio levels, controlling peaks, and maintaining professional sound quality in music production, podcasting, and broadcast applications. Understanding compression ratios allows you to make informed decisions about how aggressively to compress audio signals, ensuring optimal balance between dynamic control and natural sound character.
How to use
Enter the input signal level in decibels above the threshold, then specify your desired compression ratio (e.g., 4:1, 8:1). The calculator will instantly compute the output level and total gain reduction applied. Use these values to set your compressor parameters and achieve the desired dynamic control for your audio material.
Frequently asked questions
What does a 4:1 compression ratio mean?
A 4:1 ratio means for every 4 dB the input exceeds the threshold, the output only increases by 1 dB, providing moderate compression.
What's the difference between soft and hard compression ratios?
Ratios below 4:1 are considered soft compression, while ratios above 8:1 are hard compression, with 10:1 and higher approaching limiting.
How much gain reduction is too much?
Generally, 3-6 dB of gain reduction sounds natural, while 10+ dB creates obvious pumping effects, though this depends on musical context.