Mixing is a process that combines multiple sounds into one or several channels. This combination includes multitrack recordings that transform into a final mono, stereo or surround sound product. Within this process, the source of the volume level, the dynamics, the frequency content, and the panoramic position are altered or enhanced. Volume levels are adjusted and balanced through equalization and compression. The aim of audio mixing is to balance audio levels, to cover several frequencies, to add effects to dry audio tracks, as well as to remove errors and unwanted content. 

Mixing is the last step towards the final product. Mixing is a creative process that is done to produce a finished version of a certain track. Mixing transforms ordinary sounds into sounds that are attractive to listeners. Audio mixing is a process that is commonly used in the music industry, as well as in live performances, television, and film. Mixers are devices that are capable of accepting, combining, processing, and monitoring audio, and they can be either analog or digital. It’s worth mentioning that most mixing engineers work on a DAW or mixing console in order to achieve the mixing process accurately.

An audio mixer is the most important piece of the mixing process and it offers several functionalities. The most common ones are routing source signals to internal buses or external devices and effects, summing signals together by a simple algorithm, as well as on-board processors with compressors and equalizers. 

Audio mixers operate in a quite simple way. Audio mixers start by taking two or more audio signals, merging them together and offering one or more output signals. The aim of the mixing process is to ensure that all the individual sound sources form a harmonious final product. Mixers are essential to ensure high-quality audio in different scenarios.