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Recording in stereo - Real Acoustic Performances

It seemed sensible, before starting to do the video on recording choirs, to explain a little about the differing techniques you can use to record 'real' stereo - as in recording the placement of individual sound sources within a stereo soundfield. Quite different from our usual multitrack method of panning the various tracks to their proper location. Recording with just a pair of microphones means we have to do the job in particular ways - and many of these have 'labels' - X/Y, A/B, ORTF, Blumlein, M/S and many others.

Mixing after having recorded with a stereo technique: ORTF, XY, NOS, Decca Tree, Blumlein, AB

There are tons of discussions about these stereo techniques (RTF, NOS, XY, Decca tree, Blumlein, AB) but I did not see much with regard to the mix once used them after recording.
After one has recorded using one of these stereo techniques, what procedure to follow in the mixing process? Logically, the tracks should already reflect the stereo effect ... but if we are not entirely satisfied with the result:
What can one do with the 2 tracks in the DAW? If we do not let them as such, at 0 in the mixer, how much panning after each technique?

RODE iXY stereo microphone for the Apple iPhone and iPad

RODE Mic:

Announces the release of the RODE iXY stereo microphone for the Apple iPhone and iPad, as well as the RODE Rec audio recording app for iOS devices. RODE launched both today at the CES exhibition in Las Vegas.

When used together they are capable of recording at up to 24-bit/96kHz – the only product on the market to provide this level of resolution on Apple iOS devices! This has huge applications for both music recording as well as on-camera and general sound design.

ORTF vs. XY

What are the pros con between ORTF and XY?

  • How do you know which config to use?
  • Is one better for solo, quartet, choirs, orchestra?
  • How does crossing XY change the imaging vs. the opposite in ORTF?
  • Does X have to be above Y (or vise versa) and why?
  • Do you use the same Cardioids for XY or ORTF or a?

Thanks!

XY stereo mic alignment

Hi there,

I have got a doubt about phase in a XY stereo configuration. I've always heard that it's a very mono compatible configuration. But a technician here in my city always says that we should avoid this configuration, because if the two micros are not exactly matched (And by that he means a factory preset XY configuration only), there are severe phase problems in the high frequencies.

Is it true? Sometimes I need to use this configuration better than a semicoincident one, but I have this doubt. Could someone help? Thanks!

XY

XY creates a stereo image by using two cardioid or hyper cardioid microphones placed as near as possible to each other (and up to 12 inches apart) at 90-135 degrees spread and with the center of the spread pointed at the sound source.

XY Stereo

XY stereo set-up is a coincidence stereo technique using two cardioid microphones in the same point and angled at 90° to produce a stereo image. Theoretically, the two microphone capsules need to be at exactly the same point in space to avoid any phase problems due to the distance between the capsules. As this is not physically possible, the nearest approximation is to place one microphone on top of the other with the diaphragms vertically aligned. In this way, sound sources in the horizontal plane are picked up as if the two microphones were placed at the same point.

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