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AN295: USB Audio Class Tutorial - Silicon Labs
https://www.silabs.com/documents/public/application-notes/AN295.pdf#:~:text=The%20protocol%20defines%20four%20different%20data%20transfer%20types,type%20to%20stream%20audio%20across%20a%20USB%20link.
Fundamentals of USB Audio - EDN
https://www.edn.com/fundamentals-of-usb-audio/
USB Audio uses isochronous, interrupt and control transfers. All audio data is transferred over isochronous transfers; interrupt transfers are used to relay information regarding the availability of audio clocks; control transfers are used used to set volume, request sample rates, etc. These are shown in Figure 1.
USB Audio Simplified - Silicon Labs
https://www.silabs.com/documents/public/white-papers/usb-audio-simplified.pdf
The rapid expansion of the universal serial bus (USB) standard in consumer electronics products has extended the use of USB connectivity to propagate and control digital audio. USB provides ample bandwidth to support high-quality audio; its ease of use has been well accepted by consumers and has made USB a popular audio interface.
USB Audio and USB Type-C headphones explained - …
https://soundguys.com/usb-audio-explained-18563/
Data speeds cap at 12Mbps with USB 1.0, and ADC 1.0 maxes out at 8.2Mbps. Audio Device Class 2.0 works with speeds up to 480Mbps and uses up to 196.6 Mbps for audio. Both are more than fast enough for high-quality stereo music streams and the biggest difference is in the number of channels each can support.
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