Pro Tip: To pull this off right, you’ll need to ensure that the ears are as accurate as possible. The Decca Tree technique was developed by Decca Records in the 1950s, and it’s one of the most popular methods of recording stereo and spacial ambience in orchestral and symphonic productions. It’s fast and easy, producing stunning results that easily stand up to any traditional stereo miking approach. At some point, a cunning recording engineer must have thought that the best way to capture natural stereo was to build a head and stick microphones in it, just like we hear, because that’s exactly what the binaural stereo technique is. The two microphone capsules capture sound to the left and right of the immediate area, which means your stereo image is not as wide as a spaced pair, but is simple to set up. In practice, “coincident” means that the microphone capsules must be placed close and normally slightly above each other (fig. The rear two microphones are two meters (about 6.5′) apart, and the center mic one and a half meters (just under 5′) in front of the others in a triangle formation. Choosing the Best Thunderbolt Audio Interface on Any Budget, How to Metal Scream Without Hurting Your Voice. The stereo separation you’ll experience with a baffled A-B stereo pair is even more pronounced if you use omnidirectional mics. In fact, you should be at least 10 feet from the sound source before using the X-Y stereo miking approach. No solution to this exists, so if a wide stereo image is important to you, consider using a different stereo technique, such as the spaced pair or perhaps a Jecklin disk. One of the most common patterns you will see chosen for stereo recording is the X/Y, or coincident, stereo setup. Because the figure-8 polar pattern offers complete off-axis (side) rejection, these mics pick up an almost completely isolated (coincident) stereo field. When you record using the X-Y technique, keep these points in mind: The stereo image (the placement of the instruments in the sonic environment) isn’t as wide or realistic as it is in real life. The X-Y technique has no benefit over a single mic if you place your mics within a couple of feet of the sound source. With ORTF, you have your mic capsules aimed with an exact 110 degree angle difference from each other. For medium-distance stereo miking for choirs, orchestras, and even drum kits, A-B stereo may be your best bet. Pro Tip: Any time you have microphones covering the same sound source from different distances, you’re likely to run into some phase problems, as the offset in distance causes the sound to reach the microphones at different times. Here's a great deal on a complete matched set of sE Electronics sE4400a condenser microphones. There are many variations on this theme and mic spacing, such as the Fukada Tree and the OCT array, which owe their inspiration to this timeless microphone arrangement. Set the microphones into the openings of the ears, and you’ll have a stereo effect that sounds amazingly convincing over headphones. Mid-side (or M/S) microphone is a stereo recording technique that presents an alternative to the typical matched pair microphone recordings. All you need to set up this totally phase-coherent stereo technique is a cardioid mic (the mid or M mic), a figure-8 mic (the side or S mic), and an M-S decoder of some kind (or some clever summing in your DAW). As great as it sounds on headphones, the only downside of binaural is that it doesn’t translate as well to spaced loudspeakers. Position it very close to the source and far enough away from the rear wall, and you’ll get pure stereo with virtually no ambience. This technique is like XY but with a 180º angle between the mics, which creates a soundstage that’s wider than what you get with XY while still sounding very natural. Includes attachment points for flying/hanging. The Decca Tree itself consists of an arrangement of three omnidirectional microphones — the Neumann M 50 tube condenser is a perennial favorite — suspended around 10′ over the conductor’s head. Next time you need to record in stereo, we hope these methods help to fuel your creativity. There are a few keys to this technique that make it appear highly technical, but anyone with a bit of time and the right resources can pull it off. Here is a list of the 5 most useful stereo recording techniques you should know. The mics must also be spaced exactly 17cm apart. 5501 U.S. Hwy 30 W, Fort Wayne, IN 46818 The effect is a natural and highly musical stereo recording. Creates a fast, easy repeatable stereo micing setup. Here’s how it works. Forget miking frustrations! After you get a pair of nice mics for X-Y miking, you’ll want to use them on everything. Some stereo mic techniques specifically enhance the spatial field, while others are better at focusing it. The X-Y technique is easy to set up and results in a decent sound, so (as with all things in life) you have to deal with the compromise this ease creates.
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