Extreme Anti-Buffeting Mic Cover Print this pagePrint this page
Extreme Anti-Buffeting Mic Cover
Price: $2.25

Highlights:
High wind buffeting pressures can disable the microphone during bursts, this heat-shrink application can combat the buffeting while maintaining crisp voice performance.


Note:

Weight: 0.05 lb
Description
(Note to our competitors, we've already filed our patent application, so relax!)

These are small lengths of thin wall heat shrink tubing, which will fit our microphones, except the surface mount mic.  All our boom mics can use this treatment easily. 

INSTRUCTIONS:  Remove foam wind screens, slip the tubing over the mic capsule so it's round outline is seen in the middle of the length of tubing.  Use a heat gun or hair dryer on medium heat, and at a distance of 6-8 inches and keep it moving as you warm the tubing.  When it appears tight on the front side (where the small circle of black foam is on the mic) and similarly on the back, you can stop.  Let the mic cool, and make sure it's nice and firm.  If not, you can continue with more heat, medium, and as before.  When finished, you can re-install your foam wind screen if you like, we suggest trying it on and off.

WHY DO WE RECOMMEND THIS?

Microphones and motorcycles were never meant to be together.  Like oil and water, you really can't mix them well!  Some careful thought led Ed to the conclusion that there was a way to improve the relationship, and here is the logic behind it if you care to read it:

Wind buffeting can cause overpressure that wreaks havoc with microphones.  When the buffeting strikes the foam wind screens, it physically pins the microphone's very delicate internal mechanism against the physical limit, so that no voice signal is generated, resulting in a choppy, noisy and uncomfortable sound in your ears when the microphones are on and operating.

To combat this wind buffeting effect, you can't use something like a Bose active noise cancellation system since it is useless on wind buffeting.  They work on statistical steady state noise like aircraft turbines, etc.  Try the Bose headsets with your car windows up, and then with them down, you'll become convinced quickly how poor they handle buffeting.  Email me if you want to know the tech details on that.

This is where low-tech meets high-tech.  To block wind overpressure from the mic, you need a flexible but resilient barrier, which has to be able to vibrate enough under high pressure fronts to pressurize the air between the inner surface of the cover and the mic diaphragm.  When that kind of barrier is in place, your voice can vibrate the tight drum-like cover, but the high energy pressure bursts can't go through because the cover only vibrates a very small amount, so that buffeting noise is reduced over 95%, and since the air inside the cover is trapped, the buffeting pressure cannot enter at all, and your voice signal is slightly reduced but much crisper than before.

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