Taperssection.com

Gear / Technical Help => Microphones & Setup => Topic started by: mikesalvo on February 18, 2008, 06:29:13 PM

Title: cardioid xy question...
Post by: mikesalvo on February 18, 2008, 06:29:13 PM
is it considered xy ifmy caps are one on top of the other??? also, with one on top of the other, do I want each cap pointing directly at the stacks???
Title: Re: cardioid xy question...
Post by: Tim on February 18, 2008, 06:37:56 PM
I'm not sure what you mean by "on top of the other". The caps should be aligned vertically. Do you mean physically touching each other? I'd be worried about transferring vibrations if not shockmounted but you it would work fine if they were touching.

x/y is technically two caps vertically aligned at 90* but you can make that wider or narrower depending on where you are at. In a better sounding spot make it wider, say 110*. Farther back decrease the angle to cut down on reflections.

here are a pair of schoeps caps in x/y
(http://www.sonicsense.com/images/M100C-CCM4-XY.gif)

Title: Re: cardioid xy question...
Post by: mikesalvo on February 18, 2008, 06:45:45 PM
awesome. thanks for the pic. +t when i said on top of each other thats exactly what i meant. do I want each mic to be pointing directly at the speakers??? I am going to be recording in a very small room tonight. Ill be eh lets say 10-15' from the stage. the drums will be on my right hand side, un miked. any suggestions???
Title: Re: cardioid xy question...
Post by: Belexes on February 18, 2008, 08:02:16 PM
Wondering this about X/Y...

When in X/Y, are you pointing the right mic at the left side of the stereo image and the left mic at the right side of the stereo image?
Title: Re: cardioid xy question...
Post by: mikesalvo on February 18, 2008, 08:36:02 PM
the answer is yes. I was wondering the same thing. found the anser here:

http://taperssection.com/index.php/topic,43044.0.html

second to last reply at the bottom....
Title: Re: cardioid xy question...
Post by: DSatz on February 18, 2008, 09:24:16 PM
"X/Y" is a general class of stereo recording methods in which two directional microphones are placed at a single point in the horizontal plane. Setting up one microphone or capsule directly above the other, with the center lines of their membranes aligned vertically, is the usual way to do this. The resulting recordings are mono-compatible: you can sum the left and right channels and there will be no destructive interference in the direct sound pickup, since all sound arrives at both microphones at the same moment.

No specific angle between the axes of the microphones is implied by the term "X/Y," and where cardioids are concerned, not only is 90 degrees not a standard angle of any kind, it is actually a rather poor choice for most music recording because of the absurdly wide stereophonic recording angle which is produced. Sound sources tend to bunch up toward the center during playback. There also is very little sense of spaciousness--the pickup of low-frequency energy is essentially mono as is the pickup of diffuse sound energy.

To lessen the bunching up toward center you can angle the capsules farther apart, but the other problems just mentioned are inherent in any X/Y cardioid arrangement and can be helped only by using a non-coincident method (such as ORTF and the rest of the alphabet-soup gang) and/or by using other microphone patterns.

--best regards
Title: Re: cardioid xy question...
Post by: Belexes on February 18, 2008, 09:31:09 PM
the answer is yes. I was wondering the same thing. found the anser here:

http://taperssection.com/index.php/topic,43044.0.html

second to last reply at the bottom....

Thanks.

..and thanks always to DSatz for the above post.  I am constantly learning every day on this board.