Dynamics

Compressors are used to obtain a more consistent level by reducing loud parts of the audio material without squashing the peaks, thereby decreasing the difference between the quietest and loudest parts of the signal. When used correctly, compressors can make instruments and voices sound solid, tight and more powerful by compacting the energy contained within the sound. On static sounds such as programmed drums, for example, a compressor can be used to change the envelope—the attack, decay, sustain and release of the sound.