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That "Wavy Thing" (was: Miniature Pseudo-SASS Array)

Subject: That "Wavy Thing" (was: Miniature Pseudo-SASS Array)
From: "Curt Olson" flipov411
Date: Wed Aug 15, 2012 6:49 am ((PDT))
David,

Thanks for all your helpful input to this and other threads here.

My math, physics and EE chops don't go very deep, but thankfully I've learned 
to recognize phasing/flanging when I hear it.

What really has be stumped is words to describe that incredibly subtle "wavy 
thing" that happens in un-baffled rigs.

Ah well, time to let it rest for now.

Curt

Avocet wrote:

>> From your comments below, it looks to me that what I'm trying to describe 
>> might not be phasing.
>> 
>> I'm stumped, and probably way out on a limb by now.
>> 
>> Curt,
> 
> Don't get put off by technical chatter. :-)
> 
> You can check out "phasing" by mixing two mics to mono and holding them side 
> by side. With a "broadband" noise like traffic or wind in trees, move one mic 
> back and forwards and you should hear a phasing effect.
> 
> If you can reverse the phase of one mic to produce a difference "S" signal, 
> you get a very strong effect which nearly cancels out when the mics are 
> equidistant.
> 
> For anyone experimenting with SASS and variants, the subtracted signals can 
> give more clues as to the differences in what the mics are picking up. 
> Ideally on any stereo system, objects in the centre should cancel out and 
> this is one reason why M-S gives a cleaner stereo image.
> 
> David
> 
> David Brinicombe
> North Devon, UK
> Cogito cogito ergo cogito sum - Ambrose Bierce







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