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Old 3rd September 2006, 01:34 AM   #1
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Default Low frequency nausea

I built my own sub as many have on this forum. I did a little short write up on it here charting progress on my DIY subwoofer.


I have had this same sub for what seems like forever now.

Anywas, in my earlier tests I sent a 20hz tone and measured in room respons and it seems to be flat to about 19 hz as planned. But when testing the sub i would get very nauseous.

And ever since then, during some movies I would feel sick. I contribute it to the low tuning of the sub.

I am planning on trading (or trying to!) my 15 inch dayton and a passive radiator, for a 10 inch titanic or a nice new peerless. build a modest box and tune it to 24hz or some other actually AUDIBLE frequency that wont make me sick.

Anyone else get this low bass sickness? am i alone here? anything over about 100db and i am sick for maybe 30 minutes. (light car sickness, not puking keeled over sick).


Please respond if you have ANYTHING to say. or if you want to make a trade.

Mike
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Old 3rd September 2006, 01:37 AM   #2
SY is offline SY  United States
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Oh, yes, I find this easy to do with my subs. Always in search of The Brown Sound...
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Old 3rd September 2006, 02:36 AM   #3
lndm is offline lndm  Australia
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I know the feeling

Quote:
Originally posted by SY
The Brown Sound...
Thanks for the image, I'll now be off to lunch

I wonder. The small intestine is a quarter wavelength at 15Hz
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Old 3rd September 2006, 05:57 AM   #4
Collo is offline Collo  Australia
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Infrasonic induced nausea has been known about for a while...
http://www.borderlands.com/archives/arch/gavreaus.htm
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Old 4th September 2006, 03:54 AM   #5
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you should get used to it after a while....

I like to make play earthquakes when company is over... A few people reporte nausea... I guess its a common thing with infrasound though I can listen/feel it all day and it doesnt bother me
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Old 10th December 2006, 02:56 AM   #6
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Walt Disney and his artists were once made seriously ill when a sound effect, intended for a short cartoon scene, was slowed down several times on a tape machine and amplified through a theater sound system. The original sound source was a soldering iron, whose buzzing 60 cycle tone was lowered five times to 12 cycles. This tone produced a lingering nausea in the crew which lasted for days.
I think this article is severly inflated with hyperbole. They had no 'theater sound systems' capable of getting down to even 30Hz before Walt's death in 1966. They were convinced the limits of human hearing were 30-15,000Hz back then.

But it's an interesting article nontheless.
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Old 10th December 2006, 01:00 PM   #7
Hayden is offline Hayden  Australia
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When I sit on my dual 12 sub box man you sit on it for awhile you get head spins and then you rush to the toilet
but thats sitting on the box lol
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Old 10th December 2006, 01:13 PM   #8
spock is offline spock  Canada
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I can relate to this. After building my infinate baffle sub, I was playing with it at fairly high volumes just to see what it could do and sure enough, after a while, I didn't feel so good.
It was only after discussing this with another audio buddy who noted the same condition that we put 2 & 2 together and realized that it was the low frequency causing the problem.
Kinda handy if you have some guests over that don't want to leave
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Old 10th December 2006, 06:22 PM   #9
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Listening to the bass in that hip hop stuff has always made me sick.
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Old 10th December 2006, 07:09 PM   #10
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Originally posted by Cal Weldon
Listening to the bass in that hip hop stuff has always made me sick.

lol, amen brother. I remember the first time I was editing some vocal tracks in ProTools with my new Velodyne HGS-12 II going... I got a little woozy from some of the infrasonic info around some of the singer's breaths. And then I made the mistake of 'scrubbing' an edit, resulting in 0dB levels of anything from 2Hz to 150... But as soon as I knew what it was, the feeling went away immediately and has never come back.

But then, I never got sick from reading while riding in a car until a buddy of mine told me he gets sick reading while riding in a car.
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