[optimal] Re: Spectralis
- From: Ray Gardner <raygardner99@xxxxxxxxx>
- To: "optimal@xxxxxxxxxxxxx" <optimal@xxxxxxxxxxxxx>
- Date: Sun, 17 Jul 2011 20:19:58 -0500
I have had strange side-affect with a few people. They said the sound made them
sleepy and they had a hard time staying awake. Dark room constant sound makes
someone sleepy hammm!
Sent from my iPhone
On Jul 17, 2011, at 5:08 PM, Jef Jodell <mpscra@xxxxxxxxx> wrote:
> I assume that was meant in jest? I certainly intended no offense to anyone.
> Men on average do have lower voices, that is not good or bad, just one of the
> differences between genders. I do not have children, and a crying child gets
> my attention much quicker than people I know who have children. I am not
> suggesting anything anti-children, it is their first way communicating, and
> valuable for them to get attention should they be hurt, etc. Apologies to
> anyone I could have somehow offended unintentionally.
>
> "Shrill" is a legitimate term commonly used to describe perceptions of
> tones/pitch. My point was that hearing damage happens from extremely loud
> (well over 100 db) single noises such as gun fire, or from long term exposure
> to constant sounds, such as people experience from loud factories where
> machines may run constantly for entire shifts. The fact that the 4KHz pitch
> of the Spectralis gets our attention is due to it is in the upper mid-range,
> where we are very sensitive. As for say a vacuum, which housekeepers use
> intermittently (much like Spectralis users) hours each day, is generally
> around 60-70 dbs, louder than the Spectralis, though a lower frequency. These
> volume levels are not really a concern for hearing protection, particularly
> as it is turned on and off during even busy days.
>
> -j
>
> From: Ethan Priel <prieleye@xxxxxxxxxxxxxxxx>
> To: optimal@xxxxxxxxxxxxx
> Sent: Sun, July 17, 2011 11:52:21 AM
> Subject: [optimal] Re: Spectralis
>
> Yes, you know your audio, and you also skirted a potentially sticky PC
> issue…not to mention the children's rights activists.
>
> E
>
> From: optimal-bounce@xxxxxxxxxxxxx [mailto:optimal-bounce@xxxxxxxxxxxxx] On
> Behalf Of Jef Jodell
> Sent: 17 July, 2011 23:49
> To: optimal@xxxxxxxxxxxxx
> Subject: [optimal] Re: Spectralis
>
> The issue is both dbs and frequency. The frequency is 4000 Hertz (4Kz). Human
> hearing goes from 20 H to 20Kz. We are most sensitive to 1K Hz, just as we
> are most sensitive to green in light wavelengths. Human voices (male) tend to
> be centered around 800-1000Hz, and easy to hear. Women's voices are slightly
> higher, generally speaking, but around 4KHz is what we start to consider
> "shrill", as in a child crying. You get used to it. Only repeated constant
> exposure (sitting at it "on" for hours at a time) could cause any issue, and
> it would take decades to cause a problem.
>
> I know my audio.
>
> -j
>
> From: "blutmancra@xxxxxxxxxxx" <blutmancra@xxxxxxxxxxx>
> To: optimal@xxxxxxxxxxxxx
> Sent: Sun, July 17, 2011 10:25:41 AM
> Subject: [optimal] Re: Spectralis
>
> When I started to work with heidelberg systems it was annoying but you get
> use to it. Health end of it I really won't know. I figure heidelberg sells
> the product is not to harm operators or patient hearing.
>
> I guess you have to research to see if there was any complaints of hearing
> loss etc. Maybe there should be a study started.
>
> Brian Lutman,CRA
> Sent from my Verizon Wireless BlackBerry
>
> From: Raymond Mok <raywmok@xxxxxxxxx>
> Sender: optimal-bounce@xxxxxxxxxxxxx
> Date: Sun, 17 Jul 2011 09:14:09 -0400
> To: optimal@xxxxxxxxxxxxx<optimal@xxxxxxxxxxxxx>
> ReplyTo: optimal@xxxxxxxxxxxxx
> Cc: optimal@xxxxxxxxxxxxx<optimal@xxxxxxxxxxxxx>
> Subject: [optimal] Re: Spectralis
>
> Our office have just installed the Spectralis. I'd noticed the high pitched
> noise but didn't bothered much. However one of the tech said as soon as we
> click the "yellow" icon, the high pitched sound gave her spitting headache. I
> agree the high pitched sound is in the safety zone but does bothered some
> people.
>
> Ray Mok CRA, COMT
> Ophthalmic Photographer
> DHMC-Ophthalmology
>
> On Jul 16, 2011, at 8:21 PM, Ray Gardner <raygardner99@xxxxxxxxx> wrote:
>
> No I've got four and about to have six in my office. The Spectralis has a
> sound like that of a hearing aid whining but causes no hearing problems. Its
> just annoying at first then after a while you seem not to notice it any more.
> The HRA was much loader and gave off a lot of heat. Thing of the Spectralis
> as the Ferrari of cameras it has a strange sound but runs and does like no
> other camera can. If you need any help you can call me. (806) 676-9793
>
> Sent from my iPhone
>
> On Jul 16, 2011, at 4:06 PM, robert santora <rbsantora@xxxxxxxxx> wrote:
>
> To All,
>
> Is there any concerns about the high pitched frequency sound from the
> Spectralis causing potential harm? I have suggested discreet protective ear
> wear by anyone that is uncomfortable around the sound. I was asked by our
> docs to start a thread to see how other offices are addressing this. Thanks
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