Spatial audio - Artificial reverberation

Artificial reverberation consists of adding an effect to a sound signal that emulates the acoustic reverberation phenomena of a space. This practice has been necessary since the earliest days of recorded and broadcast music: studio recordings and the use of close microphones produce sounds that, without an acoustic environment, seem "dry" and unnatural. Numerous techniques have therefore been developed to produce a convincing effect of artificial reverberation. In the field of audiovisual production (music or film mixing), the use of artificial reverberation has become essential to create a perceptually "plausible" sensation of acoustics, or simply to create a "pleasant" sound space, or even an effect with no real concern for realism (e.g. infinite reverberation) .

Artificial reverberation techniques are also used in virtual reality applications, video games and architectural modeling tools to simulate – with varying degrees of realism – acoustic environments. This is known as "virtual acoustics" or "auralization". This term is used by analogy with visualization; it designates processes that aim to make audible, from measured or modeled data, the sound field produced by one (or more) source(s) in a space, by simulating the auditory experience at a listening point