nanog mailing list archives

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


From: Valdis.Kletnieks () vt edu
Date: Thu, 03 May 2012 11:33:07 -0400

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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