The advent of modern technologies has changed the expectations of sound quality. Recording engineers and sound technicians are not exempt from this process. The more comprehensive the rig, the more difficult our work becomes. The biggest part in the rig is occupied by sound processors. Sound processors are used to alter certain characteristics of sound.
Some sound processors can fit more than one category.
For example, the equalizer also alters the signal's amplitude and can therefore be classified as an amplitude-related processor as well. A de-esser alters amplitude and frequency. Moreover, various sound processor functions may be combined in a single unit. Sound processors are usually categorised according to their primary function. In modern productions time-related processors are of special interest.