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

Thu May 3 18:14:25 UTC 2012

As one involved in emergency services I don't gave a rats whether you
can't tell one voice from another.  I do care if someone who is having a
fire, accident, cardiac episode or stroke can get through. 

The cell companies are worrying about your whim and not the safety. 

Ralph Brandt

-----Original Message-----
From: Valdis.Kletnieks at vt.edu [mailto:Valdis.Kletnieks at vt.edu] 
Sent: Thursday, May 03, 2012 11:33 AM
To: NANOG
Subject: Re: Cellphones and Audio (was Ghost Click, though I got no idea
why)

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. ;)