Posted by Frank on 06/14/06 05:13

On Tue, 13 Jun 2006 22:46:13 -0500, in 'rec.video.production',
in article <Re: Need tone generator . . .>,
"Steve King" <steveSPAMBLOCK@stevekingSPAMBLOCK.net> wrote:

>"Frank" <frank@nojunkmail.humanvalues.net> wrote in message
>news:e89u82hnk75glnf3a16qhib0les1egr36g@4ax.com...
>
>SNIP
>
>>
>> Just for the record, the audio file linked to from The Register
>> article, although having a .mp3 extension, isn't actually MPEG Layer 3
>> encoded.
>>
>> It's actually an MPEG-1 Layer 2 file and should really have a .mp2
>> extension.
>>
>> I think that the fundamental is higher than 15 kHz though; perhaps
>> more in the neighborhood of 16 kHz, but I don't have the time for a
>> more thorough analysis.
>>
>> Like Steve, I too was able to hear it using just my usual setup of JBL
>> monitors driven by a Crown amp, let along through electrostatic
>> headphones, and I'm not exactly a spring chicken any longer. :)
>>
>
>The freq. could be higher. I have no way of knowing how accurate the
>spectral view in Audition is, and I no longer have bench equipment that will
>let me know. However, the stuff I wrote earlier about FM modulation was
>wrong upon further examination, a product of the way the spectral image is
>formed I suspect, since that's currently my only tool. I think it is a
>simple 15 kHz +/- sine wave. Could this be what the news stories are
>talking about? I expected there to be some buzziness to it.
>
>Steve King


Actually, I sort of like the sound. It has a slight calming effect on
me, which is a good thing, believe me. I can't help but wonder,
however, just how effective it is in getting kids to move on.

--
Frank, Independent Consultant, New York, NY
[Please remove 'nojunkmail.' from address to reply via e-mail.]
Read Frank's thoughts on HDV at http://www.humanvalues.net/hdv/

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