See Room Modes

A process of analysing a system and using a different technology to replicate its critical, desired characteristics. For example, a popular but rare vintage signal processor such as an equaliser can be analysed and its properties modelled by digital algorithms to allow its emulation within the digital domain.

The characteristic distribution of resonant low frequency sound waves within a confined space such as a room.

A device used to combine multiple audio signals together, usually under the control of an operator using faders to balance levels. Most mixers also incorporate facilities for equalisation, signal routing to multiple outputs, and monitoring facilities. Large mixers are also known as ‘desks’ or ‘consoles’.

The positions on the walls or ceiling where, if the surface was covered with an optical mirror, one or both loudspeakers could be seen in the reflection. The mirror point is essentially any position on a boundary where sound waves from a sound source - usually a monitor loudspeaker - will be reflected directly to the listening position. This is therefore the ideal location to place an acoustic absorber to prevent audible reflections.

Made from natural or synthetic minerals in the form of threads or fibres tangled together to form a moderately dense ‘blanket’ which permits but impedes air flow and is useful in the creation of sound absorbers, often employed as a cheaper and more efficient alternative to polyurethane form.

A device which splits the MIDI Out signal of a master instrument or sequencer to avoid daisy chaining. Powered circuitry is used to 'buffer' the outputs so as to prevent problems when many pieces of equipment are driven from a single MIDI output.

The socket on a slave unit used to feed the MIDI In socket of the next unit in line.

A description of the synchronisation systems available to MIDI users - MIDI Clock and MIDI Time Code (MTC).

An alternative term for MIDI Thru box.