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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: Re: Resonances in interconnects posted by Mike Mount on November 9, 2004 at 07:56:55:
Your post confuses me..Skin effect is real, it is there from all frequencies, and can be measured.
Even though the equations you normally see being used to describe it are inaccurate for lower frequencies, they are suitable for higher freq's and rf. The equations are a planar approximation, and are useful as long as the skin depth calculated is less than, say 10 radii. Below that, the curvature of the wire surface renders the planar approximation useless....very rapidly. The exponential approximation gives too large a skin depth in the audio range for #12 or so wire...it's off by more than a factor of three.
For calculation of the current densities at the surface for UHF, microwave, etc...the skin equations are just fine...they help the radio guys keep line losses in check, or at least understood.
For cable vendors, it is more likely that the invoking of skin effect as an audible issue is based on marketing desire than on actual measurements of audibility..
Cheers, John
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Follow Ups
- Re: Resonances in interconnects - jneutron 08:28:43 11/09/04 (1)
- Re: Resonances in interconnects . . . confusion - Mike Mount 15:18:29 11/12/04 (0)
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