Expansion area
In miking , the geometric expansion area of the sound body is the resulting, visible total angle 2 · θ ' max of the orchestral area (i.e. the limits of the music ensemble) seen solely from the standpoint of the microphone system. (In the field of serious music, "sound body" denotes, for example, a (symphony) orchestra, a choir, an organ, a string quartet or a piano trio.) The overall angle starts from the viewer at the location of the microphone system and extends to the visible outer borders to the left and right of the music grouping.
- The expansion area depends only on the width e of the orchestra and the distance d of the microphone plane of the microphone system from the sound body .
- The expansion area (of a sound body) 2 · θ ' max should not be confused with the recording area (of a microphone system) 2 · θ max .
- Only when the visible "expansion area of the sound body" (orchestra expansion) coincides with the invisible "recording area of the stereo microphone system" is the sound body correctly mapped on the full stereo basis during stereo playback, i.e. the localization of the imaging width from loudspeaker to loudspeaker .
The fixed recording area of a microphone system (microphone recording area ) represents something completely different from the expansion area of the orchestra .
literature
- Michael Dickreiter, Volker Dittel, Wolfgang Hoeg, Martin Wöhr (eds.): Manual of the recording studio technology . 2 volumes. 8th, revised and expanded edition. Walter de Gruyter, Berlin / Boston 2014, ISBN 978-3-11-028978-7 .
See also
- Recording area | Microphone arrangement | Distance law | Audio event direction | Directional characteristic
- Speaker base | Microphone base | Stereo base | Interchannel
- Runtime stereophony | Intensity stereophony | Equivalence stereophony
- ORTF stereo system | NOS stereo system | Decca tree
- List of audio terms
Web links
- Expansion range of the sound body (PDF file; 73 kB)