Re: walkie-talkie use within city limits

On 12/4/06 12:10 PM, in article 4tjdlaF14a7scU1@xxxxxxxxxxxxxxxxxx, "Dirk
Bruere at NeoPax" <dirk.bruere@xxxxxxxxx> wrote:

Don Bowey wrote:
On 12/3/06 6:48 PM, in article 4thgj1F13debrU2@xxxxxxxxxxxxxxxxxx, "Dirk
Bruere at NeoPax" <dirk.bruere@xxxxxxxxx> wrote:

Don Bowey wrote:
On 12/1/06 2:20 AM, in article 4tadvoF139672U2@xxxxxxxxxxxxxxxxxx, "Dirk
Bruere at NeoPax" <dirk.bruere@xxxxxxxxx> wrote:

Joel Kolstad wrote:
"Dirk Bruere at NeoPax" <dirk.bruere@xxxxxxxxx> wrote in message
news:4t99n1F12d7f0U1@xxxxxxxxxxxxxxxxxxxxx
So when are we going to get WiFi enabled mobile phones that can use
Skype
when they latch onto an open network?
You can already do that with Windows Mobile phones and, I would guess,
Palm
OS-powered phones.

That being said, Skype is a great example of where a drop in quality is
acceptable when the price is right (free).


Drop in quality?!
Surely you are joking?
Listen to this test recording I made.
http://www.neopax.com/test/skypetest.mp3
That recording is of a one-ended (broadcast?) conversation, not of a
conversation of two people, each on one end of a circuit. As such, what is
missing is the time delay between the time a sound is uttered and the time
it would be coded, sent, and then received at the other end of the circuit.

Your recording does not contain the echo that exists on low bit-rate
encoded
systems. If you have ever experienced a Network echo-canceller failure on
a
cellphone call you will know how badly the call is degraded.

The free part of Skype is good; the quality is fair, but not as good as the
Public network 56/64 kbit/s coded calls.
That was a recording of me in Bedford, talking to Russell in Norwich in
real time, both of us on Skype.

There is no low bit-rate coding in that conversation.

I recorded to wave and encoded at 128kb MP3

Ok, but that isn't relevant to the issue of the effects of low bit-rate
coding in telecommunications. The recorded end-to-end conversation was not
low bit-rate coded (common voip).

.

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