Recording in/out of phase - Music techology forums

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Subject: Recording in/out of phase

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Original Message 1/4 02-Sep-07 @ 07:53 AM - Recording in/out of phase

Anders Klitgaard

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When using more than one mic, I know one needs to take care not to record out of phase. However, I don't know what to look for - how does one go about recording in/out of phase?
Thanks
Anders

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Message 2/4 02-Sep-07 @ 07:19 PM - RE: Recording in/out of phase

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oh crikey, thats a big topic... assuming both mic's/leads are in phase to start with (one mic is NOT wired up with a different 'hot' pin) then you're talking about spillage from one mic getting on another in a multi drum-mic setup, or even it can happen using just 2 mics to record something and they are different distances from the source - If recording using those 2 mics, sound picked up on one mic will be arriving at the mic diaphragm slightly earlier than it does at the further away mic... then when you use the 2 channels of recorded sound, one channel is slightly delayed... at the speed of sound (which isnt very fast) it's roughly a millisecond per foot

best to do some googling - there's thousands of articles on this on the www.. and also this is why sometimes a kit sounds really good with just the kikdrum and two overheads compared to a huge multi-mic setup

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Message 3/4 02-Sep-07 @ 07:32 PM - RE: Recording in/out of phase

Anders Klitgaard

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Thanks, K, for your kind response! I'll see what I can find.
Regards
Anders

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Message 4/4 02-Sep-07 @ 09:08 PM - RE: Recording in/out of phase

Anders Klitgaard

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Okay, we've got some stuff here: http://johnvestman.com/ac_guit.htm With this, and the info in your post, K, I now feel I know what it's about in general terms. Apparently, when recording in stereo, one must check the stereo sound against the mono sound, to see if the stereo sound is still desirable, with the possibility of some benign phase interaction.
Regards
Anders

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