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These images show the basics for setting up a pair of cardioid (which should be 110-120 degrees) or sub-cardioid (which should be 120-130 degrees) microphones for outdoor use. Very few indoor venues would allow for this kind of wide pickup. The two bottom images demonstrate the vertical spacing needed to accommodate windscreens (please note pop screens are NOT suited to outdoor recording). Using this wide pickup provides a more natural sense of space and better bass response.
spaced Omnidirectional microphones also so a very good job outdoors. Omnis have an advantage in windy conditions as they re relatively immune to windnoise. typically suppressing windnoise by 20dB.The also have the most natural tone with the widest frequency response but do not create the image stability or depth of image that directional microphones can.
If you goal is to create the most natural sense of 3D space with an image capable of producing a surround type of effect with 2 speakers, the classic Blumlein technique should be used. This does require a high resolution playback system that is pricey. If you want to sit in the space you recorded while listening in your home and have the system, please give it a try.
Binaural recording techniques are probably the most common ones used to recreate a natural space as headphones are relatively inexpensive and good a good job. However, they suffer from the "in the head" effect while a Blumlein recording fills the room with the recorded outdoor space.
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