Dang reply-to-all....

You are talking about two separate problems.

One is a ground loop(The point where playing from battery makes a difference) and the easy solution is to lift the audio ground(NOT the mains ground).

The other is poor internal shielding. Typically a problem with built in audio interfaces. There isn't a good solution other than to bypass the interface. While ADAT is certainly an option and moving the D/A outside of the box will make a difference, how much of one will depend primarily on the quality of the interface. For built in interfaces on laptops it will likely be noticeable. For higher end cases though it might not be as much. Considering however these days the standard seems to be to have a breakout box anyways connected either via Firewire, USB, or PCMCIA/Expresscard, it is kind of a moot point with the higher end stuff nowadays anyways.

Seablade

On Thu, Feb 14, 2008 at 11:01 AM, Malte Steiner <steiner@block4.com> wrote:

> Or by lifting the ground on the XLR connections between the device and the
> mixer/pa.

Usually helps, or playing from batterys but I experienced and know
further cases, where even that doesnt helped. Hence my statement the
only predictable way is going optical (but also the most expensive).

Cheers,

Malte

--
Malte Steiner
media art + development
-www.block4.com-

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