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- 01-04-2008, 02:17 PM #1DickGuest
My daughter calls sometimes from a Las Vegas casino, and the
background noise is almost deafening in her Nokia N80. Very difficult
to understand what she is saying. Although this is a high-end phone,
it doesn't seem to have good noise rejection beyond the user. Are
there some phones useable on AT&T that are better for this problem
than others?
--
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- 01-04-2008, 04:22 PM #2Todd H.Guest
Re: Phones With Good Background Noise Rejection
Dick <[email protected]> writes:
> My daughter calls sometimes from a Las Vegas casino, and the
> background noise is almost deafening in her Nokia N80. Very difficult
> to understand what she is saying. Although this is a high-end phone,
> it doesn't seem to have good noise rejection beyond the user. Are
> there some phones useable on AT&T that are better for this problem
> than others?
Probably. But it'd be hard to get decent data on them, I'd imagine.
I have heard excellent reports from colleagues on the efficacy of the
Jawbone bluetooth headsets insofar as ambient noise reduction is
concerned. No one likes the battery charger connector, but background
noise rejection is supposedly very good.
I'm skeptical though, of any ambient noise reduction solution that
doesn't involve a directional microphone right in front of the mouth
of the person speaking.
Wish I had a better answer, but I thought I'd contribute with what
little I know on the subject.
My AT&T Tilt apparently has excellent audio even in the car (so say
the people I talk to at least) but a car is not as noisy as a casino.
--
Todd H.
http://toddh.net/
- 01-09-2008, 02:52 PM #3John NavasGuest
Re: Phones With Good Background Noise Rejection
On Fri, 04 Jan 2008 13:17:21 -0700, Dick <[email protected]> wrote in
<[email protected]>:
>My daughter calls sometimes from a Las Vegas casino, and the
>background noise is almost deafening in her Nokia N80. Very difficult
>to understand what she is saying. Although this is a high-end phone,
>it doesn't seem to have good noise rejection beyond the user. Are
>there some phones useable on AT&T that are better for this problem
>than others?
Better phones and headsets have noise-canceling mics, which can work
amazingly well and are the best solution. There is one mic close to the
mouth, one mic away from the mouth to pick up background only, and the
background is then subtracted from the mouth pickup. See
<http://en.wikipedia.org/wiki/Noise-canceling_microphone>
A second approach is just a highly directional mic that must be directed
at the mouth. It can work well, but isn't as effective as
noise-canceling, since noise may come from the same direction.
A third approach is a throat mic, which works wonderfully well at noise
rejection, but isn't as clear as a regular mic. See
<http://en.wikipedia.org/wiki/Throat_microphone>
Lastly there's noise _filtering_ in software, which works fairly well on
some kinds of noise (e.g., wind), albeit with some loss of voice
quality, but not well on others (e.g., other voices).
--
Best regards, FAQ FOR CINGULAR WIRELESS:
John Navas <http://en.wikibooks.org/wiki/Cingular_Wireless_FAQ>
- 01-09-2008, 07:25 PM #4Guest
Re: Phones With Good Background Noise Rejection
Dick <[email protected]> wrote:
> My daughter calls sometimes from a Las Vegas casino, and the
A friend who works in a casino has an Aliph Jawbone, and says that people
can't hear the background noise at all. They only know he is inside the
casino when his voice quality is not as good as normal, probably a side
effect of the noise cancellation.
I have a Sennheiser VMX-100, which I find to be very light and comfortable,
with the bulk behind the ear instead of hanging in front. It has a two
microphone system for noise cancellation, and I am quite happy with it.
It powers and pairs within a couple of seconds when I swing the earpiece
open. No inadvertent redials while in my pocket.
http://www.sennheiserusa.com/newsite...transid=502308
It is $80 at Newegg.com, only in Titanium. VMX100-T.
Scouting around, the black VMX100-B seems higher priced.
The charge port is called USB, but it is a USB thing, not the standard
mini. It comes with a cable that fits a standard USB-A on the other end,
and a car charger and a wall charger with USB-A connectors to fit the
cable. It also has a hard plastic carrying case for the earpiece.
--
Clarence A Dold - Hidden Valley Lake, CA, USA GPS: 38.8,-122.5
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