nanog mailing list archives
RE: Cellphones and Audio (was Ghost Click, though I got no idea why)
From: "Brandt, Ralph" <ralph.brandt () pateam com>
Date: Thu, 3 May 2012 14:14:25 -0400
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 () vt edu [mailto:Valdis.Kletnieks () 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. ;)
Current thread:
- RE: Operation Ghost Click, (continued)
- RE: Operation Ghost Click Eric Wieling (May 02)
- Re: Operation Ghost Click Sean Harlow (May 02)
- Re: Operation Ghost Click Jeroen van Aart (May 02)
- Re: Operation Ghost Click Valdis . Kletnieks (May 02)
- Re: Operation Ghost Click Joe Hamelin (May 02)
- Cellphones and Audio (was Ghost Click, though I got no idea why) Jay Ashworth (May 02)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Adam Atkinson (May 02)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Robert Bonomi (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Jay Ashworth (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Valdis . Kletnieks (May 03)
- RE: Cellphones and Audio (was Ghost Click, though I got no idea why) Brandt, Ralph (May 03)
- RE: Cellphones and Audio (was Ghost Click, though I got no idea why) Brandt, Ralph (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Adam Atkinson (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Jay Ashworth (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Joel jaeggli (May 03)
- VoIP/Mobile Codecs (was Re: Operation Ghost Click) Sean Harlow (May 02)
- Re: VoIP/Mobile Codecs (was Re: Operation Ghost Click) Jeroen van Aart (May 02)
- RE: VoIP/Mobile Codecs (was Re: Operation Ghost Click) Brandt, Ralph (May 03)
- VoIP vs POTS (was Re: Operation Ghost Click) Jared Mauch (May 02)
- Re: VoIP vs POTS (was Re: Operation Ghost Click) William Herrin (May 02)
- Re: VoIP vs POTS (was Re: Operation Ghost Click) Jared Mauch (May 02)