Does anyone know how the PC audio sample rate handles slight differences between its own audio sample rate and the source's sample rate?
>> Please refer to the section 5.12.4 of USB 2.0 spec https://www.usb.org/document-library/usb-20-specification
How would one know if the sink (PC) is asynchronous, synchronous, or adaptive?
>>The USB spec compliant host will support all the three synchronization types, the device mentions the synchronization type in the endpoint descriptors.
Please refer to USB 3.0 spec table 9-18