Analysis of information sources in references of the Wikipedia article "Audio multicore cable" in English language version.
digital analog noise.
Individual aluminium-mylar screen over each pair; Individual PVC sheath over each screened pair; Nitrile (High Flex) PVC Sheath
Foil-screened cables are rather rigid and don't take kindly to sharp bends, but they do offer excellent screening properties and smaller-gauge cables are available for such jobs as patchbay wiring and permanent cable runs. Many multicore cables also use foil screening, and it's important not to coil such cables too tightly.
