|
Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
|
|
|
Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
|
In Reply to: To continue the knee analogy posted by Commuteman on January 12, 2004 at 13:40:05:
Peter: ""are you saying" "the piezo effect is calcluated to be small, therefore you are imagining your knee hurts when you hit it", or : the piezo effect is calculated to be small, therefore that is not the cause of the pain"""No..I was saying that just because someone wants to tell you that piezo is the cause doesn't make it so..and that the fact that piezo exists doesn't mean it applies.
Peter: ""You referred to your own first-hand experience with mechanical impact on a mic cable causing an audible result (presumably due to an electrical signal arriving at the receiver attached to the cable)
Any idea how that electrical signal is generated?
Seems to me, it could be one of three things:
1) movement of conductors relative to one another causing an I=BL kind of generation
2) movement of components of the cable causing the generation of an electrical signal (e.g the piezo effect)
3) movement of the entire cable in the external field(s)""I stated that 1 was the most likely, given the stray fields present in the area. I made the hypothesis that the diff pair was vibrating w/r to each other, and that loop modulation in the presence of a dc magnetic field caused a small voltage that perfectly matched the sound the cables made when the smacked the concrete..absolutely sounded the same in the speakers..
2 could be possible, but that would require repeating the test in a magnetic free environment.
3 seems least likely because it is a differential pair that is twisted, and movement of the entire cable won't cause the differential voltage.
Any other candidates?
Don't know..
Cheers, John
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Re: To continue the knee analogy - jneutron 13:56:07 01/12/04 (2)
- Thanks, that answers my question. - Commuteman 17:13:01 01/12/04 (1)
- Elaboration - jneutron 07:06:36 01/13/04 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
