Polymicrophoneing

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Under Polymikrofonierung sometimes, multi- miking called, refers to a microphone array for sound recording in stereophonic or in surround sound , using many distributed, mostly close to the sound sources or source areas placed spot microphones without using main microphones . This is "single microphone ", which provides a very good presence (clarity) with close-up effect with pressure gradient microphones and a clear stereo image via panpots .

The room acoustics

The natural room acoustics are of little or no importance here. The result is a room-independent sound image with its own directional localization and volume balance , whereby only the sonic peculiarities of the sound sources but not their placement are recorded. Other necessary additions can be made with room microphones and artificial reverberation. Particular attention must be paid to a clear acoustic separation between the microphones.
When setting up the microphones , the 3: 1 rule of thumb should be observed in order to avoid audible comb filter effects : "If an instrument is a certain distance from the microphone, the next microphone that also picks up this sound should be at least three times this Distance to the first microphone. "

Definition of terms "miking" and "microphony"

The word microphony stands for an effect that is detrimental to the sound, in which non-microphones unintentionally serve as sound transducers. It describes a disorder such as B. the "tube ringing" when sound penetrates the electron tubes from outside or the noises that arise when stepping on a cable. That is why the word "microphony" with the meaning of a disturbance - especially in connection with poly and multi - should be avoided if actually microphones are meant.

literature

  • Thomas Görne: Microphones in theory and practice. 8th edition, Elektor-Verlag, Aachen, 2007, ISBN 978-3-89576-189-8
  • Gustav Büscher, A. Wiegemann: Little ABC of electroacoustics. 6th completely revised and expanded edition. Franzis Verlag, Munich 1972, ISBN 3-7723-0296-3 ( Radio-Praktiker-Bücherei 29 / 30a).
  • Norbert Pawera: Microphone Practice . Tips and tricks for stage and studio. Technology, acoustics and recording practice for instruments and vocals. 4th, completely revised and expanded edition. PPV-Medien, Bergkirchen 2003, ISBN 3-932275-54-3 .

See also

Web links