On 10/06/2010 6:42 AM, dsi1 wrote:
> On 6/9/2010 9:50 AM, Kajikit wrote:
>> On Wed, 09 Jun 2010 07:41:36 -0400, >
>> wrote:
>>
>>> On 6/8/2010 9:41 PM, Cheryl wrote:
>>>> "Nancy > wrote in message
>>>> news:xaCPn.24674$U64.5654@hurricane...
>>>>
>>>>> You know there is something they call Mosquito, along those lines,
>>>>> it's a high pitched sound they have used in areas where young people
>>>>> congregate ... supposedly adults can't hear it but it drives
>>>>> the younger people nuts. They leave the area. Higher frequencies are
>>>>> the first to go as you age, they say.
>>>>>
>>>> I've heard of that mosquito thing, but never heard it. Hmmm.
>>>>
>>>
>>> Good summation here and some test tones:
>>>
>>> http://journal.plasticmind.com/ears/...ure-a-youngun/
>>>
>>
>> Interesting. I can clearly hear all the way up to 17khz and they make
>> my ears hurt! I can't hear the 18khz tone. I just turned 39 and I have
>> never liked loud music or loud noises...
>
> If you have a good set of speakers you might be able to hear the high
> frequency tones - however, most people won't be able to play the high
> tones - their crappy computer sound system won't have the capability. On
> my system, only the 12 KHz sounds like it might have a chance to be a
> pure sine wave tone - the rest is all harmonic distortion and digital
> distortions.

I tossed out my HiFi speakers long ago. No point having speakers that
can reach 20KHz when you don't even hear beyond 10KHz.

Krypsis