Thread: AC - DC adapter
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Vir Campestris Vir Campestris is offline
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Default AC - DC adapter

On 18/12/2017 13:24, whisky-dave wrote:
On Monday, 18 December 2017 12:55:57 UTC, Bob Eager wrote:
On Mon, 18 Dec 2017 02:59:25 -0800, whisky-dave wrote:

On Friday, 15 December 2017 17:54:23 UTC, Mike Clarke wrote:
On 15/12/2017 16:06, whisky-dave wrote:
Apparently human ears can't detect the differnt phase so it shouldn;t
make a differnce.

They can certainly tell the difference if the left and right hand
channels are out of phase.

What do you mean by out of phase ?


Oh dear, dear, dear.


So yuop don;t knopw do you.
Are you saying that getting the speaker wires crossed is out of phase ?
You do know that the human ear can;t detect phase don't you , no you probbaly don't

http://www.earlevel.com/main/1996/10...tion-of-phase/

The human ear is insensitive to a constant relative phase change in a static waveform. For instance, you cannot here the difference between a steady sawtooth wave (which contains all harmonic frequencies) and a waveform that contains the same harmonic content but with the phase of the harmonics delayed by various (but constant) amounts. The second waveform would not look like a sawtooth on an oscilloscope, but you would not be able to hear the difference. And this is true no matter how ridiculous you get with the phase shifting.


And a little further down the same article:

"Now, even if the phase is linear (simply an overall delay), we can
easily detect a phase difference if we have a reference. For instance,
you can get closer to one of your stereo speakers than the other; even
if you use the stereo balance control to even the relative loudness
between speakers, it wont sound the same as being equidistance [sic]
between them."

Andy