It's very important that memcpy() copies from higher addresses to lower, as that cancels the harmonic caused by SIMD instructions copying the other way.
The opposite if you happen to use a big endian system.
with built-in antivirus protection for untarnished signal quality
you got to hand it to them for the creative ways of the con. i for one would never imagined to have included an anti-virus scanner in a cable meant for audio/video data...wait, AV, hmmm...