Thread: AC - DC adapter
View Single Post
  #51   Report Post  
Posted to uk.d-i-y
whisky-dave[_2_] whisky-dave[_2_] is offline
external usenet poster
 
Posts: 10,204
Default AC - DC adapter

On Monday, 18 December 2017 13:12:10 UTC, Max Demian wrote:
On 18/12/2017 10:59, 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 ?


When the cone on the left is pushing, the one on the right is pulling.
Then the brain might decide the sound is coming from behind you.


That requires a reference point, so how do you know which one is out-of-phase.
The human ear can't detect phase all it can do is detect differncies which does NOT detect phase, because the human ear detects volume not phase, so what happens when you have two signals that are out of phase say through left and rught channels is that yuo get cancallatiuon you are NOT detecting phase but hear the result is two signals cancelling each other out and therefor lowering the amplitude, and that's it.