Yes indeed. It is designed specifically for audio application. Read a comprehensive description below. It is more info. than you may need but informative.
Wire gage is an index which shows, indirectly (inversely and logarithmically), the cross-sectional area of a round wire. In the case of solid conductors, measurement of this area is pretty straightforward: the area is the radius of the wire squared, times pi, and for the sake of ease of expression, a measure called "Circular MIL area" is instead often used instead; one circular mil is the area of a circle with a diameter of one mil (1/1000 inch), and the circular mil area of a solid wire, consequently, is always the diameter of the wire, in mils, squared.
Stranded wire is another matter. For any given AWG size, a stranded wire will occupy more space than a solid wire, because the wire gage is measured by summing the cross-sectional area of the strands. Because there are air pockets between the strands, any given cross-sectional area of wire will take up more overall space in a stranded configuration than it will in a solid wire. Consequently, when we talk about "diameter" relative to wire gage, it's well to remember that diameter will vary not only with gage but also with stranding. In this article, when we talk about relative diameters, our examples are based on solid wire for the sake of simplicity.
The relationship of gage to wire size is, for a lot of people, counterintuitive. The larger the gage number, the smaller the wire. What's more, the relationship isn't linear, but logarithmic. Two 16 AWG wires, combined, amount to a 13 AWG conductor. If you're familiar with decibels (dB), this will make good sense. If we go up or down 10 gage sizes, we increase or decrease the area of the conductor by a factor of 10. If we go up or down 3 gage sizes, we increase or decrease the area by a factor of about 2. For some reason (we're not really sure why) the relationship isn't precise, but it's close enough, for most purposes, to a straight logarithmic formula. For example, a 40 AWG solid wire has a circular mil area, as specified by the National Bureau of Standards, of 9.61; a 30 AWG wire has a circular mil area of 100.5, a 20 AWG wire comes in at 1020, and a 10 AWG at 10380.
Incidentally, it's important to remember that it is the size of the WIRE, not the size of the wire with its insulation, that is measured in AWG.
[ Gary Jan 10, 2018 ]