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Author Topic: Update umbrella time  (Read 1272 times)

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Offline Gutbucket

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Re: Update umbrella time
« Reply #15 on: July 12, 2022, 10:06:19 AM »
 :coolguy:
Extra style points for the mounting bar geometry and creative coverage option.
+T for helpful photography assistant.

Couple suggestions:
>Might consider partially overlapping the umbrellas. Can probably clip the edge of the underside one to the support arms of the top one. That should provide better central coverage with a less side overhang.
>Might want to shorten the arms to lower the umbrellas to further improve coverage and better deal with wind blown rain.
>Probably need to crank down on that wingnut to prevent the assembly from flopping over to one side in a gust.  Lower will present less lever-arm to the wind.  A bit of clothes-hanger wire secured to the upper hole in the support bracket extending out to hook around either umbrella arm can serve as support bracket.  That's how I support my folding telescopic antenna based mic bar arms in a horizontal orientation.

Trade-offs on having the umbrellas lower are potentially louder droplet impacts, and increased parabolic reflector effect. The parabolic reflector effect amplifies local chatter immediately surrounding the recording position, and can sometimes be heard as an upper-midrange/low-treble peak-filter tone in the ambient background sound floor.  A localized version of the under a tent canopy effect.  I was walking to lunch yesterday and passed under a new parking awning and this effect was immediately apparent both on the sound of my footsteps and the ambient background noise tonality of water moving in the adjacent waterway.
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Offline rocksuitcase

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Re: Update umbrella time
« Reply #16 on: July 12, 2022, 10:50:38 AM »
yes, from your picture you should try overlapping the center, some such idea will be necessary. We found out the hard way about water rolling into the array. Then we decided to use an odd 3 umbrella look for a wide array. attached just for your DIY thought processes:
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Offline if_then_else

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Re: Update umbrella time
« Reply #17 on: July 14, 2022, 01:59:23 AM »
Gutbucket's DIY approach with open cell foam is essentially based on the same materials that are used for commercial solutions like the Rycote "Duck" or the Reinhard "Rain Hat" - just that those have a second layer at the bottom side that is to to drain off the water before it reaches the mics.

Yes exactly.  The idea is a "baby duck" that would sit directly atop a water-repellent treated big ass Shure windscreen, like a funny little hat.  With it directly on top it can be smaller, requiring less overhang, but then also needs especially good droplet impact disruption.

Picture of the commercially available Reinhardt "Rain Hat" with both a Movo WS50 and Rycote "Super Softie" mounted. As already mentioned, it's probably a lot cheaper to DIY your own custom versions. (Still, some near-coincident configs might not be practical with such a setup.)

Offline Gutbucket

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Re: Update umbrella time
« Reply #18 on: July 14, 2022, 09:43:33 AM »
^ Thanks for that.

I'm thinking of cutting a plastic bottle into shape so that it's hoop-strength sort of spring-clamp grabs the windscreen, with filter material glued to its top side.  Will likely need to fashion some sort of drip edge lip.
musical volition > vibrations > voltages > numeric values > voltages > vibrations> virtual teleportation time-machine experience
Better recording made easy - >>Improved PAS table<< | Made excellent- >>click here to download the Oddball Microphone Technique illustrated PDF booklet<< (note: This is a 1st draft, now several years old and in need of revision!  Stay tuned)

 

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