Artikel von Felix Andriessens
Ambience recordings are a crucial tool for designing acoustical environments and scenographies and thereby transporting emotions, for example in applications as film sound, game sound, VR applications, theatre and radio plays, to name a few.
It is a phenomenon, that all of a sudden recording techniques are popular again that seamed to be dead (for good reasons). With the rise of 3D-Audio, 1st order Ambisonics recording techniques are in the game again and everything we learned about them in the last 40 years seems to be forgotten...
ORTF-3D is an ideal microphone setup for VR and 360 video, as it is capable of recording a spacious ambience. It can be rendered quite easily with the help of the suitable tools.
by Helmut Wittek, 2016
Fig. 1 above: ORTF-3D arrangement, in a windscreen with the cover removed
Recording engineers who work with 3D sound face a difficult task when choosing a suitable recording technique. The number of channels is greater than with playback systems that operate only in the horizontal plane, so the complexity increases as well.
When a customer demands 3D audio rather than conventional 5.1 surround it may be tempting to apply solutions that are overly simple. But when a 3D recording has been made well, using a suitable recording technique, the advantages are impressively audible.
Image Assistant 
Ambience Recording 
ORF Surround Techniques 
ORTF-3D 
Microphone and Room 
AES-42 Digital microphones 
Helmut Wittek 
Günther Theile 