PDA

View Full Version : More notes on "Still fighting with wireless network"



Andy Dannelley
2004-12-14, 09:51
On Dec 14, 2004, at 8:05 AM, discuss-request (AT) lists (DOT) slimdevices.com
wrote:

> Date: Mon, 13 Dec 2004 14:14:12 -0800
> From: kdf <slim-mail (AT) deane-freeman (DOT) com>
> To: Slim Devices Discussion <discuss (AT) lists (DOT) slimdevices.com>
> Subject: [slim] More notes on "Still fighting with wireless
> network"
> Message-ID: <1102976052.41be14341ae47 (AT) callisto (DOT) deane-freeman.com>
> In-Reply-To: <D851696F-4D46-11D9-82F9-0011242EC048 (AT) earthlink (DOT) net>
> References: <200412132016.iBDKFqeL011713 (AT) lists (DOT) slimdevices.com>
> <D851696F-4D46-11D9-82F9-0011242EC048 (AT) earthlink (DOT) net>
> Content-Type: text/plain; charset=ISO-8859-1
> MIME-Version: 1.0
> Content-Transfer-Encoding: 8bit
> Precedence: list
> Reply-To: Slim Devices Discussion <discuss (AT) lists (DOT) slimdevices.com>
> Message: 6
>
> Quoting Andy Dannelley <andyda (AT) earthlink (DOT) net>:
>
>
>> Does anyone know what how much bandwidth is taken up by each music
>> stream?
>
> 1411 kbps each PCM stream (squeezebox wired default, player
> settings->audio->bitrate limiting = no limit )
>
> varies for MP3 streaming depending on the file bitrate and the bitrate
> limiting
> setting in the player settings mentioned above.
>
> -kdf
>
Wow! If I read this correctly, that is 1.4 Mbps. Isn't 802.11b 5 Mbps
(in theory)?

So, if I read his correctly, 3 streams is 4.2 Mbps, if so, it seems
that 802.11b would be used to the limit, so if anything else needs BW,
well, not much left? Am I interpreting this correctly?

I notice you said with the limiting set to "no limit"

I have this set to 320 kbps. Is there something I can do here to
reduce the bandwidth requirements?

I believe most of my MP3s are at 192 kbps (if that makes a difference)

Any suggestions on how to make better use of my wireless BW (wired is
not an option) to get both my music and other network activities
working better?

I'm considering a second wireless network on a different channel. WIll
that help? What else can I do? (wireless)

Thanks,

Andy

Craig Eales
2004-12-14, 09:59
The server will never stream an MP3 faster than the MP3s bitrate - so
your 192 kbps MP3s will only take 192 kbps bandwidth.

If you set your limit to 128 kbps, then the server will transcode your
MP3s down to 128 before sending them to the player.

The limit is most useful if you have some music in a format other than
MP3 - for example ogg - in this case:

If the limit is set to "no limit" then the server will decode the ogg
file to 1.4Mbps and send to the player.
If the limit is set to "x" then the server will decode the ogg to wav
(1.4Mbps), and then re-encode it as MP3 at x kbps before sending it to
the player.

The end result being that no data will ever be sent at a rate higer
than the limit you set.

So at a limit of 320 kbps you could run 15 players or so, with 192kbps
MP3s this will be up to 25 or so.

Craig


On Tue, 14 Dec 2004 08:51:13 -0800, Andy Dannelley <andyda (AT) earthlink (DOT) net> wrote:
>
> On Dec 14, 2004, at 8:05 AM, discuss-request (AT) lists (DOT) slimdevices.com
> wrote:
>
> > Date: Mon, 13 Dec 2004 14:14:12 -0800
> > From: kdf <slim-mail (AT) deane-freeman (DOT) com>
> > To: Slim Devices Discussion <discuss (AT) lists (DOT) slimdevices.com>
> > Subject: [slim] More notes on "Still fighting with wireless
> > network"
> > Message-ID: <1102976052.41be14341ae47 (AT) callisto (DOT) deane-freeman.com>
> > In-Reply-To: <D851696F-4D46-11D9-82F9-0011242EC048 (AT) earthlink (DOT) net>
> > References: <200412132016.iBDKFqeL011713 (AT) lists (DOT) slimdevices.com>
> > <D851696F-4D46-11D9-82F9-0011242EC048 (AT) earthlink (DOT) net>
> > Content-Type: text/plain; charset=ISO-8859-1
> > MIME-Version: 1.0
> > Content-Transfer-Encoding: 8bit
> > Precedence: list
> > Reply-To: Slim Devices Discussion <discuss (AT) lists (DOT) slimdevices.com>
> > Message: 6
> >
> > Quoting Andy Dannelley <andyda (AT) earthlink (DOT) net>:
> >
> >
> >> Does anyone know what how much bandwidth is taken up by each music
> >> stream?
> >
> > 1411 kbps each PCM stream (squeezebox wired default, player
> > settings->audio->bitrate limiting = no limit )
> >
> > varies for MP3 streaming depending on the file bitrate and the bitrate
> > limiting
> > setting in the player settings mentioned above.
> >
> > -kdf
> >
> Wow! If I read this correctly, that is 1.4 Mbps. Isn't 802.11b 5 Mbps
> (in theory)?
>
> So, if I read his correctly, 3 streams is 4.2 Mbps, if so, it seems
> that 802.11b would be used to the limit, so if anything else needs BW,
> well, not much left? Am I interpreting this correctly?
>
> I notice you said with the limiting set to "no limit"
>
> I have this set to 320 kbps. Is there something I can do here to
> reduce the bandwidth requirements?
>
> I believe most of my MP3s are at 192 kbps (if that makes a difference)
>
> Any suggestions on how to make better use of my wireless BW (wired is
> not an option) to get both my music and other network activities
> working better?
>
> I'm considering a second wireless network on a different channel. WIll
> that help? What else can I do? (wireless)
>
> Thanks,
>
> Andy
>
>
>