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The level above which compression starts to take effect. Signals above this level will be reduced in volume.

A visual representation of how much the compressor is reducing the signal's level, important for understanding the amount of applied compression.

The way compression responds to signals just above the threshold. A soft knee represents a gradual increase in compression while a hard knee represents an abrupt start.

The initial high-energy burst of sound at the beginning of a waveform, often preserved or shaped by compression to maintain impact.

The ratio between the largest and smallest values of a sound signal. It is crucial for preserving the natural loudness variation in music production.

A technique where the original signal is mixed with a compressed version of itself to maintain dynamic range while controlling peaks.

Compression that is applied differently across multiple frequency bands, allowing more precise dynamic control over the frequency spectrum.

A technique where the compressor is triggered by an external source, often used to create rhythmic pumping effects.

A process that reduces the dynamic range of a sound signal, making loud sounds quieter and quiet sounds louder.

In compression, it is the proportion by which the input signal has to increase to produce a single unit increase in output level.

Compression based on the average power of the signal, providing a more musical compression as it responds to perceived loudness.

The shape of how the compressor's attack and release respond over time, which can affect the sonic character of the processed material.

The time it takes for the compressor to apply full compression after a signal exceeds the threshold.

Refers to the lengthening of the sound signal's decay phase after the initial attack, often increased by a compressor to make sounds fuller.

A type of compression that reacts to the peak levels of the input signal, often used for controlling unwanted spikes in audio.

An extreme compressor with a very high ratio that does not allow the signal to exceed a certain threshold, effectively putting a ceiling on loudness.

The time it takes for the compressor to return to no compression after the signal drops below the threshold.