Re: [RDD] jackd

[Fred Gleason <fredg@xxxxxxxxxxxxxxxxxx>]

On Thursday 01 July 2004 11:54, Scott Foster wrote:
> I am new to jack and seem to be having some trouble getting it to work with
> Rivendell.  I have setup the Rivendell config file as instructed in the
> notes.  I have also started jack using the following command: jackd -d alsa
> hw:0  This is on a dell Latitude D600 running jack 0.8.0.  I have checked
> in Rivendell under the adapters and it appears that it is not connecting to
> JACK.  I also have tried just starting CAED before anything else and this
> seems to drive JACK crazy.  Is there something out there that I am missing
> here?  Your help is greatly appreciated.

You need to start jackd *before* caed.  I use the following command line:

	jackd -d alsa -d hw:0 -r 44100

The strange-looking '-d hw:0' option is an argument to the *ALSA* driver, not 
JACK itself.  It instructs ALSA to use the 'hw:0' audio interface.  If you 
have more than one audio device (either 'real' or defined in your .asoundrc), 
you can specify that instead.  Most users will want 'hw:0'.

The '-r 44100' specifies what sample rate JACK should use.  Due to the nature 
of how JACK works, only one rate at a time is supportted.  Rivendell 
currently makes no attempt to verify that the current JACK rate is 
appropriate for the particular audio cut being played, so if a mismatch does 
occur, you'll hear it as audio seeming to run 'too fast' or 'too slow'.  
Moral:  pick a standard rate for your library and stick with it!

Cheers!


|-------------------------------------------------------------------------|
| Frederick F. Gleason, Jr. | Director of Broadcast Software Development  |
|                           |             Salem Radio Labs                |
|-------------------------------------------------------------------------|
| All progress is based upon a universal innate desire of every organism  |
| to live beyond its income.                                              |
|                                             -- Samuel Butler            |
|                                                "Notebooks"              |
|-------------------------------------------------------------------------|


-----------------------------------------------------------------------------
To unsubscribe to the rivendell-dev list, send mail to
'majordomo@xxxxxxxxxxxxxxxxxxxxxxxxxx' and put 'unsubscribe rivendell-dev'
in the message body (NOT the subject line).
-----------------------------------------------------------------------------