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#1
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"Paul" wrote:
Would someone please explain what X/Y Placement means? - Perpendicular to each other? It means the mics are angled at 90 deg from each other with the capsules as close to touching each other as possible. When using this placement: "X" points at what? "Y" points at what? The one points to the right and other points the left. I think it's probably arbitrary which is X or Y, but the one which has the butt end sticking out to the left (looking past the mics to the source you're recording) is the right channel and vis versa. Can this placement be achieved on a "Stereo Bar" or should one be further back to avoid phase? It can be achieved using a stereo bar (which just saves you having to use two mic stands). The whole point of XY is that it uses the directionality of the mics rather than time of arrival differences to create the stereo image, so phase isn't an issue. -jw |
#2
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X/Y Mic Placement for Grand Piano
Would someone please explain what X/Y Placement means? – Perpendicular
to each other? When using this placement: "X" points at what? "Y" points at what? Can this placement be achieved on a "Stereo Bar" or should one be further back to avoid phase? Thanks, Paul |
#3
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Paul wrote:
Would someone please explain what X/Y Placement means? – Perpendicular to each other? There is a really good tutorial on stereophony on http://www.josephson.com. X-Y is another way of describing a coincident pair. When using this placement: "X" points at what? "Y" points at what? They don't necessarily point anywhere. Spread them out until you get the stereo imaging you want. Can this placement be achieved on a "Stereo Bar" or should one be further back to avoid phase? With a coincident pair, both capsules are as close together as possible so there is no phase difference between channels. This is both the advantage and disadvantage of the method. Yes, a stereo bar will work with most mikes. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#4
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Mix magazine put out a good overall book on microphones a while back.
I think Loren Aldren was the author. Good book on mic placement, mic combinations, mic patterns, and overviews on many popular mic models. It goes over XY, as well as ORTF, mid-side, Blumlein, spaced pair, etc. I'm sensing your original question is a "hydra"... one answered question will spawn 5 more. This would be a good book for you. |
#5
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Loren Alldrin
Max Arwood "xy" wrote in message om... Mix magazine put out a good overall book on microphones a while back. I think Loren Aldren was the author. Good book on mic placement, mic combinations, mic patterns, and overviews on many popular mic models. It goes over XY, as well as ORTF, mid-side, Blumlein, spaced pair, etc. I'm sensing your original question is a "hydra"... one answered question will spawn 5 more. This would be a good book for you. |
#6
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i think you will find that ORTF or a spaced pair will generally give
you better results than XY. up close, or even directly over the soundboard for a pop/rock sound - pull back some for a more classical sound (just outside the curve of the case, or as far out as 8-10' depending on the acoustic properties of the space where you are recording.) |
#7
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In article ,
"John Washburn" wrote: "Paul" wrote: Would someone please explain what X/Y Placement means? - Perpendicular to each other? It means the mics are angled at 90 deg from each other with the capsules as close to touching each other as possible. Having just taught this to my Introductory Recording Class, I feel that I should jump in here and point out that in order to really exploit the cardioid pickup pattern's directional property, so that the two microphones -3dB point in their pickup patterns align, then the two microphones need to be angled at 131 degrees to each other (65.5 degrees to the left of centre for the left microphone, 65.5 degrees to the right for the right facing microphone). Obviously, this means that centrally located sound sources are going to be pretty well off axis for both microphones. Angling the microphones in further will put central sources more on-axis, but will also reduce the stereophonic spread. Most of the time when I hear X-Y done at 90 degrees offset, it sounds very mono-ish, which is why my hackles get raised when I see it purported as the "only" or "best" stereo recording microphone technique - but then again, I'm a hot head. As far as books on the subject are concerned, I would recommend Bruce Bartlett's eminently readable "Stereo Microphone Techniques" published by Focal Press, and/or Ron Streicher's "New Stereo Soundbook" available through Audio Engineering Associates. The AES still sells the compendium of Journal articles, "Stereophonic Techniques: An Anthology" as well. -- FL |
#8
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#9
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Frank Lockwood wrote:
Having just taught this to my Introductory Recording Class, I feel that I should jump in here and point out that in order to really exploit the cardioid pickup pattern's directional property, so that the two microphones -3dB point in their pickup patterns align, then the two microphones need to be angled at 131 degrees to each other (65.5 degrees to the left of centre for the left microphone, 65.5 degrees to the right for the right facing microphone). Obviously, this means that centrally located sound sources are going to be pretty well off axis for both microphones. Angling the microphones in further will put central sources more on-axis, but will also reduce the stereophonic spread. Most of the time when I hear X-Y done at 90 degrees offset, it sounds very mono-ish, which is why my hackles get raised when I see it purported as the "only" or "best" stereo recording microphone technique - but then again, I'm a hot head. I prefer to set the mic's relative positions according to what I hear. Mic patterns differ sufficiently that tweaking for what I'm after both on and off axis has always seemed necessary. It's not that I'd mind being able to handle this with a protractor. g -- ha |
#10
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Ron Streicher's "New
Stereo Soundbook" available through Audio Engineering Associates. The AES still sells the compendium of Journal articles, "Stereophonic Techniques: An Anthology" as well. ************************************************** ******************* These two books are my top two recommendations for anyone interested in recording, especially for folks who want to record real instruments. A good way for me to judge a recording book is how much time is spent on mic placement versus knob twiddling. Most books fail that test badly, these two ace it. steve |
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