¡Ah, vale!
Aquí en Málaga tenemos otras palabras, xD
Aquí en Málaga tenemos otras palabras, xD
Alguien escribió:USB audio tends to use the isochronous transfer mode - the packets get chucked out of the computer to the DAC with limited latency, but with NO retires on lost/corrupted packets. It is essentially a one-way pipe. There is a CRC but no way for the endpoint to request a replacement packet. The USB host also prioritises the Interrupt and control transfer modes, so if the bus is busy any isochronous transfers may be delayed. The reliability of the connection therefore becomes an issue, and any induced noise interfering with the data link could corrupt packets with no way for the endpoint to do anything about it.
You don't get corrupted data when you copy a Word document to a flash drive because file transfers use the Bulk transfer mode. In this mode there is no guarantee of latency (it can be as slow as you like), but there is full packet checking and retires on error. This is NOT the case with isochronous where "small errors are not catastrophic and can be tolerated.
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