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Reverberation

Written by TParker
Friday, 04 February 2005
A complex of many reflected sounds occurring in an enclosed space such as a building or cave. The effect is often confused with echo which, strictly, is a discrete repeat of a sound event. Reverberation occurs to some extent in any place where a sound can occur, but is most noticeable in very large places with many hard reflective surfaces which are at complex angles to one another, such as large churches etc. Most people are able to recognise particular types or reverberation and can associate these with imaginary rooms of varying sizes. Devices for the artificial creation of reverberation ( sometimes called "room simulation") have been available for some time. Initially based on electromechanical devices such as reverb springs or reverb plates, these are now usually digital devices. Several distinct phases are observed in the evolution of a reverberative sound and these include pre delay, early reflections, high & low frequency damping, decay.
Last Updated ( Thursday, 25 August 2005 )

Studio Jargon

Mode

A simple definition of this complex and diverse term would almost certainly be inaccurate, while a full discussion is beyond the scope of this glossary, but here goes. Essentially a type of scale. If the notes used in a melody all appear in a given modal scale, and if the melody begins or ends on the base note (final) of the modal scale, the melody is said to be in that mode. The modes most commonly referred to can be obtained by playing only (and all of) the white piano notes between certain keys and their octaves thus: Ionian C - C, Dorian D - D, Phrygian E - E, Lydian F - F, Mixolydian G - G, Aeolian A - A. Modes are most commonly encountered in folk and ethnic music. The modern major and minor scales correspond to the ionian and aeolian modes respectively. So it seems that tonal music (most of the music written in the last 300 - 400 years) is based on only two of a number of possible scales, and it is interesting to note that while much European art music has confined itself to a thorough exploration of only these two modes, the rest of the world and European folk musicians have been quietly exploring all the rest and others. In defence of the apparent narrow mindedness of European art musicians, it must be said that the other modes do not easily lend themselves to the systematic and hierarchical structures beloved of them.

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