opaqueice Wrote: > It's true that the part I cut is at zero - but since the other half of > the time the voltage is (say) negative, there _is_ a DC offset defined > as the time averaged value of the voltage. But anyway that's a red > herring (see above). > > > > Right - that's one possibility. I guess I would break it down like > this: > > 1) the speaker responds differently and non-linearly to positive versus > negative voltage, or moving out versus moving in if you prefer, so the > sound is distorted and in a different way for the two samples. > > 2) the same as 1), except it's the electronics somewhere along the > audio chain which are asymmetric and causing distortion. > > 3) there is no distortion, so the speaker cone's motion is symmetrical > but reversed in phase. The sound waves produced differ only by a > "polarity reversal", and the human ear+brain can distinguish the > compression versus rarefaction type waves. However I'm not sure this > possibility makes sense, because it's not clear to me a real sound wave > in air can behave that way, since I think compression must always be > followed by rarefaction, and the other way too. On average the > pressure probably has to stay fixed to the room pressure, otherwise it > seems there'd be a net flow of air towards or away from the speakers. > > More possibilities?
1. Wasn't it you who said that that would be too small an effect to hear? 2. See above. 3. What are you talking about? I thought you said there was no DC component at the speaker terminals? -- P Floding ------------------------------------------------------------------------ P Floding's Profile: http://forums.slimdevices.com/member.php?userid=2932 View this thread: http://forums.slimdevices.com/showthread.php?t=23759 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
