[152591] in North American Network Operators' Group

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Re: Cellphones and Audio (was Ghost Click, though I got no idea why)

daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Thu May 3 11:35:06 2012

To: NANOG <nanog@nanog.org>
In-Reply-To: Your message of "Thu, 03 May 2012 11:01:01 -0400."
 <22621797.1944.1336057261000.JavaMail.root@benjamin.baylink.com>
From: Valdis.Kletnieks@vt.edu
Date: Thu, 03 May 2012 11:33:07 -0400
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

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On Thu, 03 May 2012 11:01:01 -0400, Jay Ashworth said:

> In general, though, intelligibility comes from the higher frequencies,
> and 3.4kHz is *usually* high enough.  What might be the case is that you'd
> have more trouble *distinguishing* amongst women, or between women and
> children, because the tones necessary for that are more located above the
> cutoff frequency.

I have had more than a few surreal conversations on the phone with my
daughter - once the 3.4kHz filter gets done, I can't distinguish her voice from
her mom's (and yes, I've gotten social-engineered as a result).  Life has
gotten simpler since she got old enough to have her own cell phone. ;)


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