1 Mar
2006
1 Mar
'06
6:08 p.m.
On Wed, Mar 01, 2006 at 04:52:33PM -0600, Paul Winkler wrote:
On Thu, Mar 02, 2006 at 06:47:19AM +0900,
res0u2uc(a)verizon.net wrote:
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.
It is also a conceptual jump to appreciate how a DC signal
can include an AC component.
I balance my relative familiarity in this area with my
abundant ignorance on the subject of music and recording!
On the subject of the direction of signals in
cables, I
think I can offer to put the issue to rest by reminding
all parties that audio signals from a microphone or to a
loudspeaker are carried by the AC (alternating current)
component of electron movement. Thus the direction of the
electric current reverses many thousands of times each
second, more or less depending on the pitch.
thanks, I was going to say much the same thing.
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 :)
--
Paul Winkler
http://www.slinkp.com
--
Joel Roth