Ambient/ Surround Recording Array:
Mounting Bars for gIRT Crossg CB 250, CB 200
The IRT microphone cross is an arrangement for ambient recording. Its primary characteristic is a transparent and spacious rendering of the acoustic environment. It is useful as a four-channel arrangement for room tone for example in combination with the OCT surround system (for more details please view PDF, chapter 3.1):
With certain restrictions the IRT microphone cross can also be used for full surround (e.g. 360 cinema sound recording or for other playback arrangements in which the speakers are placed in the four corners of a square).
The CB 250 is the version which more closely approximates the theoretical ideal, while the CB 200 is the original, somewhat smaller version.
A modified form of IRT Cross exists for supercardioids as well. Since the distance between microphones is only 140 mm, the cross itself is distinctly smaller.
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