[linux-audio-user] Re: Digital Fidelity

[Paul Winkler]

On Thu, Mar 02, 2006 at 07:09:35AM +0900, res0u2uc at verizon.net wrote:
> On Wed, Mar 01, 2006 at 04:52:33PM -0600, Paul Winkler wrote:
> > The only exception I can think of is when there's a
> > DC offset to the signal of sufficient voltage to force the
> > signal always be positive (or always negative).
> > But that would mean something's broken :)
> 
> Not necessarily broken. Class A amplifiers do their work
> with sufficient DC offset that the signal never changes
> direction. Even so, the music is carried by an AC
> *component* which is present, and may be separated out by
> using a transformer.

Or a highpass filter tuned very low - AKA a capacitor in series.  Which
almost any modern electronic gear has on its inputs and outputs.

-- 

Paul Winkler
http://www.slinkp.com