When you go after ONE variable you aren’t getting it done. Skin effect is one of the least important variables in an audio cable. Where audio cables and all analog cables have problems, is in time coherence and skin effect doesn’t directly impact that. We tend to hook onto fancy materials or a one shot variable reduced to the maximum or minimum. How many lowest inductance cables to do we need with super high capacitance?
They aren’t describing skin effect but proximity effect caused by current in a wire altering the current distribution. The same current direction between two wires pushes the current field “OUT”, and differing current direction pull the fields “in” to the wires center. Not the same thing as skin effect at all.
The capacitance and inductance of a cable is FLAT with frequency, so the cable doesn’t change L and C as frequency is changed. And ya, that’s the science. I test L and C at 1 KHz to calculate the impedance of RF cables. Why? There is no need to test higher than that as it is the same value and more accurate tested at lower frequencies. Inductance can change SLIGHTLY (drops) as frequency goes up as the “average” distance between the magnetic field between wires changed due to skin effect moving most of the current to the wire surface, but this is a really small change. Send me your cables and I’ll test L and C and prove it to you.
Wire efficiency increases with reduced size, making complex wire shapes unnecessary and why they aren’t the best scientific solution to a myrid of concurrent problems. There is a lot more than latching onto a magic term or variable to make exceptional cable but the audio market is famous for a new word, material or “discovery”. We tend to drop what we are holding all together and jump to the next thing with nary a thought as to how the interrelated variables all work together.
We reduce skin effect why (improved proximity effect is what is actually shown)? How does that change the time based distortion in an analog cable? Sure, it can change the proximity effect based on geometry but that isn’t boiled down to time based frequency driven problems. Until we do all that, we aren’t done yet, we just got started.
The major distortion in analog cables is the velocity of propagation non linearity caused by physics we just can’t escape. Vp is zero at DC (the signal is always there), and goes to the limiting Vp of the dielectric at RF (up to 100% in theory). Between those two points we have a exponential curve that defines how a particular cable works. ALL analog frequency cables have this distortion and nothing, not even “no skin effect”, can change that.
The above comment isn’t to shoot arrows at anybody, it is to illustrate a more holistic approach needs to be defined before we make a cable and how it ALL, not piece parts, work together to make cable better. And yes, it is a design to a cost problem as well. We all want to enjoy the results and be able to afford it.
The situation isn’t removing skin effect at all with changes to the wire’s shape, it is that it is probably the least important to audio looked at as a single variable. If you want to buy a single optimized variable, sure, there are all out there for R, L and C.
The trick is to optimize the ENTIRE set of variables through audio and place a butcher’s thumb on the ones that have the most influence on time propagation.
Patents are meaningless until they are challenged. What are the first and most important claim? Is it an artwork patent or a design patent? I can go on and on but patents don’t have much say with regards to “findings” and the science most of the time. They are primarily designed to exclude, and that’s usually not done with the science. I have over thirty patents and trust me, sales and marketing want exclusion more than the science.