tomsi42 Wrote: > > You do not have a DC component here, as during the timeperiodes (the > halves) you cut away, the output voltage is 0V (in theory, at least). >
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). > > What is happening when you play one of your samples, the speaker unit > will only push out and go back to it's "resting position". Playing the > other signal, the speak will only pull in instead. Now, if that has > anything to do with the sound differences you hear, I don't know. > 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? -- opaqueice ------------------------------------------------------------------------ opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234 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
