03-Feb-2016, 19:07
USB can operate in four different 'transfer modes'. USB audio 2.0, which uses the isochronous transfer mode (true for synchronous, asynchronous and adaptive "submodes") does indeed have no error correction. It has error detection via CRC, but no retry or guarantee of delivery. Printers, portable harddisks etc. use a USB mode (bulk mode) which has error detection via CRC, with guarantee of delivery.
https://en.m.wikipedia.org/wiki/USB
http://www.beyondlogic.org/usbnutshell/u...sochronous
https://www.silabs.com/Support%20Documen.../AN295.pdf
BTW. I personally don't blame data errors to be the cause of difference in sound quality between different cables. I believe these to stem solely from the physical/electrical layer.
https://en.m.wikipedia.org/wiki/USB
http://www.beyondlogic.org/usbnutshell/u...sochronous
https://www.silabs.com/Support%20Documen.../AN295.pdf
BTW. I personally don't blame data errors to be the cause of difference in sound quality between different cables. I believe these to stem solely from the physical/electrical layer.
PS Audio P3, Shunyata ΞTRON Alpha Digital and HC/Furutech power cables, Paul Hynes SR7EHD-MR4, DIY Roon Server & Roon Endpoint running AudioLinux Headless, Phasure Lush^2 USB cable, Audioquest Diamond RJ/E ethernet, Uptone Audio etherREGEN, Mutec MC-3+ USB, Shunyata ΞTRON Anaconda Digital XLR AES/EBU, Devialet Expert 250 Pro CI, Nordost Tyr Reference LS cables, Von Schweikert VR-5 SE Anniversary Edition, Anti-Mode Dual Core 2.0, JL Audio Fathom F112. More detail here.
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