Re: Frequency range for audio

I looked into this back when we were doing 508 the first time and again on TEITAC.

There IS a frequency range for LIGHT --  

but NOT for SOUND.

Instead it is very variable.   And often it is a pattern.   Someone will have a seizure with the opening of a symphony -- but not for other symphonies by that composer or any others.   

I was unable to find any information on any frequency or pattern that caused problems across people.

If you do find anything - let me know.  But I couldn’t. 

thx

Gregg
--------------------------------------------------------
Gregg Vanderheiden Ph.D.
Director Trace R&D Center
Professor Industrial & Systems Engineering
and Biomedical Engineering University of Wisconsin-Madison
Technical Director - Cloud4all Project - http://Cloud4all.info
Co-Director, Raising the Floor - International - http://Raisingthefloor.org
and the Global Public Inclusive Infrastructure Project -  http://GPII.net

On Aug 29, 2013, at 12:47 AM, Vivienne CONWAY <v.conway@ecu.edu.au> wrote:

> Hi all
>  
> Does anyone know of a frequency range which is known to trigger seizures?  I know there was a proposal by a European group on audio seizures and frequencies in 2008 but don't know if anything came of that.  I have heard that repetitive sounds and/or low or high frequencies might trigger epilepsy, but haven't seen anything definitive.
>  
> I'd really appreciate it if anyone has information on this for guidance.
>  
>  
> Regards
>  
> Vivienne L. Conway, B.IT(Hons), MACS CT, AALIA(CS)
> PhD Candidate & Sessional Lecturer, Edith Cowan University, Perth, W.A.
> Director, Web Key IT Pty Ltd.
> v.conway@ecu.edu.au
> v.conway@webkeyit.com
> Mob: 0415 383 673
>  
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