Re: [Alsa-user] Maudio Transit USB - Problems with optical input

[Eric J. <al...@xm...>]

On Fri, 29 Apr 2005 07:05:30 -0700 (PDT)
Bill Unruh <un...@ph...> wrote:

> > I've used the digital out of my amplifier (Yamaha 740). In the specs
> > its written that the monitoring output, that I use works at 96KHz. I'll
> > read the manual again, wether the signal is resampled or simply looped
> > through. BTW: It was not working @ 96KHz. Lots of 'overrun' messages
> > but no data written.
> >
> > Using the 72KHz instead of 96KHz (too much for the computer) bears in
> > mind, that there should be at least digital garbage in the recorded
> > file that increases with time ...:-) Nothing but the error shows up.
> 
> Since your amplifier amplifies an analog signal, there will be an a-d
> converter in there to put out that digital signal. I am willing to bet
> that the a-d on the transit is better than the a-d in that amplifier,
> unless you have a really really expensive amplifier. Ie, why are you
> using the digital output on your amp to feed into the Transit?
> This is not to let the Transit off the hook. But might let you do what
> you want to do.


   One of the fringe benefits of a digital audio connection is that it
obviates the ground loop noise caused by most computer-to-stereo hookups.
There are other ways to solve that problem, but spdif works very well. 

   Of course, if the Transit has it's own ground isolation, and a lot of
high end cards do, there might not be that much of a difference.