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Mounting bar for 4*CCM 41
ORTF Surround Bar LM

  • for recording in the "ORTF Surround" technique
  • optimal imaging characteristics like those of the “IRT Cross”:
    good 360° imaging with a pleasant, natural-sounding spatial impression
  • Application: Room or ambience recording in 5.1 Surround
Mounting bar for 4*CCM 41 ORTF Surround Bar LM

The “ORTF Surround” recording method is a new system for the pickup of surround ambience. This microphone arrangement and its sonic characteristics are quite similar to those of the well-known “IRT Cross“ designed by Günther Theile. Both the 360° imaging and the spatial impression are of optimal quality. This is achieved with a high degree of signal separation among channels, based both on arrival-time differences and level differences.

It differs from the IRT Cross arrangement in being rectangular rather than square. Its pickup regions are correctly apportioned through careful choice of the angles and distances among the microphones.