Thread: Digital Output and Mic In/Line In

I tried it too, with few success. The input signal (Line or Mic) seems to be looped to the Line out.
Maybe it is possible to record the Mic signal and play back at the same time.(?)

The first response of VIA is a typically standard answer...

Try to use the CD-In but I guess it won't work because I have tested it in a similar case: when a stereo signal is send to the CD-In the 5.1 analog-output on the motherboard only puts stereo at the middle jack out. That means the signal isn't converted to a digital format (-> upmixing to 5.1 impossible). It is only looped to the line-out.

OBTW: I suppose the digital s/pdif is only stereo signal (in case of the VIA Epia M10000) and not 5.1 because when I connect the s/pdif to my extigy (can be used as stand-alone) the extigy only put the front stereo signal out.

Originally Posted by going.entertain

The first response of VIA is a typically standard answer...

Try to use the CD-In but I guess it won't work because I have tested it in a similar case: when a stereo signal is send to the CD-In the 5.1 analog-output on the motherboard only puts stereo at the middle jack out. That means the signal isn't converted to a digital format (-> upmixing to 5.1 impossible). It is only looped to the line-out.

OBTW: I suppose the digital s/pdif is only stereo signal (in case of the VIA Epia M10000) and not 5.1 because when I connect the s/pdif to my extigy (can be used as stand-alone) the extigy only put the front stereo signal out.

most sound cards mix in the analogue signals after DAC (wave, digital CD, SPDIF in) before outputting in as analogue via the line out. hence u will only hear the digital source from SPDIF out even though you can hear analogue sources in your line out.

some sound chips allows for digitising of analogue sources (call stereo mix) before mixing them with the digital sources. for these sound cards, you CAN hear analogue sources on your digital out. but EPIA isnt using one of those.

it's possible on some sound codecs which allows analog signals to be converted before mixing with other digital sources. for these cards, you can hear the analogue sources on your SPDIF out. HOWEVER. EPIA ain't using one of these.

in addtion, for those sounds cards that does this, the analogue to digital conversion is done in a very noisy enviroment (on the board) hence noisy output is to be expected.

Originally Posted by antimatter

Thanks for your informitave response. Maybe you can point me in the direction of some sound cards that do do this or maybe a USB device that has some line ins.

I am looking for an answer to a problem. My problem is that I need to get a LINE IN (for my radio) to play out the digital port.

What do I need to do to accomplish this?

Is there any sort of USB recording device that would enable me to hook up an exteral source that would plug into my computer via USB and convert the Analog to Digital.

And are you saying that the CD IN is not digital?

before i start, could you tell me how you intend to use your digital SPDIF?

if the final destination of the SPDIF is a digital pre-amp, most of these can accomdate analogue signal mixing as well.

if your final destination is that of a digital amp (which as far as i know, there is only one, and i don't think it's even on market) then you are stuck.

the only soundcard that i have experience with that can digitise analogue line in to SPDIF are onboard soundcards on Gigabyte motherboards. so i can't really help you there...

perhaps you describe you intended setup and i see how i can help you

and yeah.. CD-in is as analogue as it gets (the 4 pin connector). a few sound cards has digital CD-in, which is 2 pin (actually a SPDIF). anyway, most of the music softwares don't play CDs through the CD-in. they read it as CDA and play it via wave port.

kao