P Floding Wrote: > I don't think any RCL circuit will actually invert any signal.. (Again I > think time delay is being confused with polarity inversion. The fact > that time delay is measured in degrees at a certain frequency seems to > be the reason for this confusion.)
I'm not sure anyone is confused by this, except possibly you. It's not a coincidence that time delays are measured in degrees - it's usually much more convenient to use that notation. Polarity inversion, as you call it, is simply a 180 degree phase shift across all frequencies. If you want to think of it as time delay, it's a delay by t = pi/omega, where omega is the frequency, for each frequency. This terminology is sensible so long as we are talking about oscillations which are sustained for more than a few cycles (which is always the case in music, but might not be for some very short, sharp, pulse). Now, any damped driven oscillator, including RLC circuits, responds with a frequency-dependent phase shift in the output relative to the input. This phase never exceeds 90 degrees (it's obvious why it can't if you think about the physics for a second) so to answer your question, with one RLC circuit you couldn't make a "polarity inverter". On the issue of asymmetry in air sound waves, that is an incredibly tiny effect. -- opaqueice ------------------------------------------------------------------------ opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234 View this thread: http://forums.slimdevices.com/showthread.php?t=22118 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
