Author Topic: IsoHelmet design?  (Read 1504 times)

Mjbraun

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IsoHelmet design?
« on: June 07, 2014, 04:54:20 PM »
Hello!

I found this thread from a few years ago for a soundproof helmet but no mention of successes or failures with any finished product, so I thought I'd ask if anyone had any advice on building an "IsoHelmet".

Here's what I'm hoping to build: I have a junk full-face motorcycle helmet. I wanted to be able to give someone a set of isolating headphones (wireless or wired) to be worn under the hemet (which is lined with the 1" foam mentioned in the thread. The person could then been in a loud room (music, machines, people) but have almost no experience of the ambient sound (other than maybe the bass). They'll still have sight (and air!).

Would just the foam and the headphones be sufficient for isolation? Or is there something else I should add? Or is this a fool's errand?

I'm grateful for any guidance or suggestions!

Randy S

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Re: IsoHelmet design?
« Reply #1 on: June 07, 2014, 06:11:52 PM »
This has been a challenge for many many years without great leaps of success.
Here is the problem:
1)The system would need to be air tight ...which means there would have to be some type of air supply. also there would be heat build up.
2) you take sound in 3 ways, through your ear canal, mastoid bone and your entire skeletal structure
so there would be no way what so ever to have someone with a helmet on in a room with noise and not be able to hear some amount of it..maybe in a soundproof space suit... :)

Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

Mjbraun

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Re: IsoHelmet design?
« Reply #2 on: June 07, 2014, 06:41:42 PM »
That was kind of my suspicion: I was hoping the headphones would block the ears and by being full-face, reduce bone conduction. If the perceived ambient sound can be drastically lowered and with new sound being piped in, could that work decently well? I don't expect any way to hit no-sound-leakage but a heavy reduction might be adequate.

Randy S

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Re: IsoHelmet design?
« Reply #3 on: June 07, 2014, 06:48:29 PM »
By piping in sound into the helmet you could absolutely reduce what can be heard from with in the room...
The brain will focus on what is in the helmet and drown out the background noise...

That would work far better then just headsets for sure.
 
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

 

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