Question of Jack Setup

Hello,
	I'm very new to the Jack audio system and have a few
simple  
questions about what I think would be it's perfect
application to an  
audio problem I'm having.
	I work for the KDVS radio station in Sacramento, which does
 
terrestrial broadcasts as well as Internet broadcasts, and
we have an  
analog audio line out coming off our main broadcast board
into a 160  
MHz computer, which is connected via a 10Mb/s connection to
a much  
faster, brand new Dell PowerEdge server, which has a much
bigger  
connection to the Internet to do our MP3,Vorbis,and Real
streams.
	My problem however, is trying to get the audio line in from
the slow  
computer, through the 10Mb/s network, up to the much faster
PowerEdge  
server's line in. I believe this is what Jack can do,
right?
	I guess my question then, if Jack is the right application,
is how  
would I go about doing this? Do I need more than just Jack?
Do I need  
to use a "third-party" client alongside Jack to
do this?
	I really want to take the line in off the slow computer's
sound card  
and have it coming out on the PowerEdge as the line in, so
that  
applications like Real, which don't support Jack, can just
grab the  
line in and encode that.
	I'd appreciate any and all help.

Thanks,
Chris Thielen
KDVS Webmaster

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On Wed, 2006-07-05 at 10:48 -0700, Christopher Thielen
wrote:
> Hello,
> 	I'm very new to the Jack audio system and have a few
simple  
> questions about what I think would be it's perfect
application to an  
> audio problem I'm having.
> 	I work for the KDVS radio station in Sacramento, which
does  
> terrestrial broadcasts as well as Internet broadcasts,
and we have an  
> analog audio line out coming off our main broadcast
board into a 160  
> MHz computer, which is connected via a 10Mb/s
connection to a much  
> faster, brand new Dell PowerEdge server, which has a
much bigger  
> connection to the Internet to do our MP3,Vorbis,and
Real streams.
> 	My problem however, is trying to get the audio line in
from the slow  
> computer, through the 10Mb/s network, up to the much
faster PowerEdge  
> server's line in. I believe this is what Jack can do,
right?
> 	I guess my question then, if Jack is the right
application, is how  
> would I go about doing this? Do I need more than just
Jack? Do I need  
> to use a "third-party" client alongside
Jack to do this?
> 	I really want to take the line in off the slow
computer's sound card  
> and have it coming out on the PowerEdge as the line in,
so that  
> applications like Real, which don't support Jack, can
just grab the  
> line in and encode that.
> 	I'd appreciate any and all help.

sounds as if netjack is what you need, but before we get
into that, why
is the analog audio signal feeding the slow system at all?
what does the
slow system do with it?

--p



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Aah,  my apologies, I missed a vital part of the problem.

KDVS itself, and the analog feed off the main board is in a
basement,  
while our server-rack and high-speed Internet connection, as
well as  
the computing power to encode the six or so streams we need,
is four  
stories above us, and a few rooms over, so we'd need a few
hundred  
feet of cable at least, which I did ask for (haha) and was
(of  
course) denied, as the radio station only controls a small
portion of  
the building.

So I started looking into software solutions. Next to the
main board,  
in the basement, is an old server, with visible IP address
to the  
Internet, but it does have a 10 Mb/s connection up the four
stories  
to kdvs.org, which has both the computing power and Internet
 
connection necessary to do our audio streaming.

As of right now, we have an analog radio tuner sitting
upstairs,  
tuned to our terrestrial frequency, and that radio's line
out runs  
into a SB Live line-in, which is then encoded by Darkice and
sent to  
the same localhost for our Icecast streams. Our Real
streaming is  
similiar and on the same box.

The audio quality of a terrestrial radio, going through an
analog  
audio wire in a server-rack takes in not only the quality
loss  
because we're picking up our signal through the air, but
the wire  
itself is in a server rack, causing a high-pitched
electrical noise  
that is, after investigation, coming from the servers.

So, to get rid of this horrid set up and greatly increase
the audio  
quality on our streams, I would like to use a software
solution to  
get the line in off the computer in the basement, up through
the 10Mb/ 
s network, to the Dell PowerEdge server sitting on our good
Internet  
connection.

Sorry for being confusing, I guess the setup is rather
contrived, but  
netjack would provide this functionality?

Thanks again for the help,
Chris Thielen
KDVS Webmaster

On Jul 5, 2006, at 11:00 AM, Paul Davis wrote:

> On Wed, 2006-07-05 at 10:48 -0700, Christopher Thielen
wrote:
>> Hello,
>> 	I'm very new to the Jack audio system and have a
few simple
>> questions about what I think would be it's perfect
application to an
>> audio problem I'm having.
>> 	I work for the KDVS radio station in Sacramento,
which does
>> terrestrial broadcasts as well as Internet
broadcasts, and we have an
>> analog audio line out coming off our main broadcast
board into a 160
>> MHz computer, which is connected via a 10Mb/s
connection to a much
>> faster, brand new Dell PowerEdge server, which has
a much bigger
>> connection to the Internet to do our MP3,Vorbis,and
Real streams.
>> 	My problem however, is trying to get the audio
line in from the slow
>> computer, through the 10Mb/s network, up to the
much faster PowerEdge
>> server's line in. I believe this is what Jack can
do, right?
>> 	I guess my question then, if Jack is the right
application, is how
>> would I go about doing this? Do I need more than
just Jack? Do I need
>> to use a "third-party" client alongside
Jack to do this?
>> 	I really want to take the line in off the slow
computer's sound card
>> and have it coming out on the PowerEdge as the line
in, so that
>> applications like Real, which don't support Jack,
can just grab the
>> line in and encode that.
>> 	I'd appreciate any and all help.
>
> sounds as if netjack is what you need, but before we
get into that,  
> why
> is the analog audio signal feeding the slow system at
all? what  
> does the
> slow system do with it?
>
> --p
>


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On Wed, 2006-07-05 at 11:25 -0700, Christopher Thielen
wrote:
> So, to get rid of this horrid set up and greatly
increase the audio  
> quality on our streams, I would like to use a software
solution to  
> get the line in off the computer in the basement, up
through the 10Mb/ 
> s network, to the Dell PowerEdge server sitting on our
good Internet  
> connection.

1) if you deliver a signal via the ethernet, it is never
going to arrive
on the analog line in to the dell.

2) is there a reason you cannot run an analog audio cable to
the dell?

3) netjack will deliver the audio to the dell, but real will
still not
be able to use it *easily*. it can be made to work, but it
will require
various hacks. i don't know well it will work - people have
made various
real products do playback via JACK with equivalent hacks,
but input to
their encoder is a whole different ball of wax. i expect it
will work,
but i also expect that a lot of tweaking with parameters
will be
necessary.

--p




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services, security?
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