TYATYA
Headphoneus Supremus
I do not known where to post this question so post here.
What I found is a headphones will make a sound like white noise with out any dap, phone or similar thing.
This picture below, a headphone 60 Omh of impedance (I do know this is not matter because 300 Omh cans also experienced) and normal cable and jack.
Jack is covered by alu foil (said, kind of metal).
When headphones on my head and the jack on my hand (one or two no matter), slide the foil during WALKING, I heard a sound similar to white noise. Measurement result is 0.28V.
Still standing by one leg then wave the other one, I heard same noise.
My hand touching or none touching (electricity isolation), result is the same.
Waving headphone cable in any direction so that it crossing Earth magnetic curve did not make noise.
Summary the phenomenon: walking, body movement cause a kind of bias voltage between poles of headphones jack. And when close the circuit (make poles contact), a noise generate by membrance of headphone.
Hope you guys can comment on this or better, give an explanation.
Thanks
What I found is a headphones will make a sound like white noise with out any dap, phone or similar thing.
This picture below, a headphone 60 Omh of impedance (I do know this is not matter because 300 Omh cans also experienced) and normal cable and jack.
Jack is covered by alu foil (said, kind of metal).
When headphones on my head and the jack on my hand (one or two no matter), slide the foil during WALKING, I heard a sound similar to white noise. Measurement result is 0.28V.
Still standing by one leg then wave the other one, I heard same noise.
My hand touching or none touching (electricity isolation), result is the same.
Waving headphone cable in any direction so that it crossing Earth magnetic curve did not make noise.
Summary the phenomenon: walking, body movement cause a kind of bias voltage between poles of headphones jack. And when close the circuit (make poles contact), a noise generate by membrance of headphone.
Hope you guys can comment on this or better, give an explanation.
Thanks
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