decibel

Until Carl gets back to me...

I've read that we can hear about 20 Hertz to 20,000 Hertz
(give or take) and that:

"any exposure to 140-dB sound causes immediate damage"

Just out of curiosity, would a 160-dB sound cause
damage to our hearing (or part of the ear or brain)
if it was, let's say at 25,000 Hertz?

What about less than 10 Hertz?

http://www.howstuffworks.com/question124.htm

Stephen

On 1/25/06, stephenszpak <stephen_szpak@hotmail.com> wrote:
> Until Carl gets back to me...
>
> I've read that we can hear about 20 Hertz to 20,000 Hertz
> (give or take) and that:
>
> "any exposure to 140-dB sound causes immediate damage"
>
> Just out of curiosity, would a 160-dB sound cause
> damage to our hearing (or part of the ear or brain)
> if it was, let's say at 25,000 Hertz?

Very interesting question. I don't think it would damage your hearing
the same way an audible sound would, because it wouldn't be focused at
a specific place in the cochlea.

I remember a museum exhibit with a dial that let you change the
frequency of a sound, and when you turned it up higher than you could
hear it gave you a weird kind of headache.

The Wikipedia article on ultrasound
(http://en.wikipedia.org/wiki/Ultrasound) says there isn't that much
danger, but it's mostly in the context of sonography.

> What about less than 10 Hertz?

There is a persistent rumor that a certain frequency of infrasound can
cause people to lose control of their bowels. See
http://en.wikipedia.org/wiki/Brown_note.

> http://www.howstuffworks.com/question124.htm
>
> Stephen

Keenan

--- In MakeMicroMusic@yahoogroups.com, Keenan Pepper
<keenanpepper@g...> wrote:
>
> On 1/25/06, stephenszpak <stephen_szpak@h...> wrote:
> > Until Carl gets back to me...
> >
> > I've read that we can hear about 20 Hertz to 20,000 Hertz
> > (give or take) and that:
> >
> > "any exposure to 140-dB sound causes immediate damage"
> >
> > Just out of curiosity, would a 160-dB sound cause
> > damage to our hearing (or part of the ear or brain)
> > if it was, let's say at 25,000 Hertz?
>
> Very interesting question. I don't think it would damage your
hearing
> the same way an audible sound would, because it wouldn't be
focused at
> a specific place in the cochlea.
>
> I remember a museum exhibit with a dial that let you change the
> frequency of a sound, and when you turned it up higher than you
could
> hear it gave you a weird kind of headache.

++++++++++++++++++++++++++++A headache, that is pain, means
damage is occuring.
>
> The Wikipedia article on ultrasound
> (http://en.wikipedia.org/wiki/Ultrasound) says there isn't that
much
> danger, but it's mostly in the context of sonography.
>
> > What about less than 10 Hertz?
>
> There is a persistent rumor that a certain frequency of infrasound
can
> cause people to lose control of their bowels. See
> http://en.wikipedia.org/wiki/Brown_note.

++++++++++++++++++++++++++Link didn't work. That's okay.
>
> > http://www.howstuffworks.com/question124.htm
> >
> > Stephen
>
> Keenan

Stephen
>

>Until Carl gets back to me...

About what?

>I've read that we can hear about 20 Hertz to 20,000 Hertz
>(give or take) and that:
>
> "any exposure to 140-dB sound causes immediate damage"
>
>Just out of curiosity, would a 160-dB sound cause
>damage to our hearing (or part of the ear or brain)
>if it was, let's say at 25,000 Hertz?

I don't know. I think there has been some weapons
research in this area.

>What about less than 10 Hertz?

This can cause confusion and damage organs. I think there
are actually weapons like this available.

All of this is off topic, wouldn't you say, Stephen?

-Carl

> A headache, that is pain, means
> damage is occuring.

Not necessarily.

-Carl

--- In MakeMicroMusic@yahoogroups.com, Carl Lumma <ekin@l...> wrote:
>
> >Until Carl gets back to me...
>
> About what?
>
> >I've read that we can hear about 20 Hertz to 20,000 Hertz
> >(give or take) and that:
> >
> > "any exposure to 140-dB sound causes immediate damage"
> >
> >Just out of curiosity, would a 160-dB sound cause
> >damage to our hearing (or part of the ear or brain)
> >if it was, let's say at 25,000 Hertz?
>
> I don't know. I think there has been some weapons
> research in this area.
>
> >What about less than 10 Hertz?
>
> This can cause confusion and damage organs. I think there
> are actually weapons like this available.
>
>
> All of this is off topic, wouldn't you say, Stephen?

+++++++++++++++This sort of relates to some other stuff.

/makemicromusic/topicId_11878.html#12012

So that is out too?

Stephen

>> >Until Carl gets back to me...
>>
>> About what?
>>
//
>>
>> All of this is off topic, wouldn't you say, Stephen?
>
>+++++++++++++++This sort of relates to some other stuff.
>
>/makemicromusic/topicId_11878.html#12012
>
>So that is out too?

I really don't see how any of this is on-topic, and I'm not
particularly interested in discussing it off list, but all
list members are welcome to write me any time at

carl at lumma dot org

with any ideas, suggestions, or just to say hi.

-Carl