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Test for USB 2.0 Gadget Audio

The command-line audio player (aplay) and soundfile recorder (arecord) are used for the test.

Record and Play

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Play music and choose “Speakers (AC Interface)“ in Windows PC. Then use arecord -D hw:1,0 -c 2 -r 48000 -f S16_LE | aplay -D hw:2,0 -c 2 -r 48000 -f S16_LE command to output the sounds to the earphone of the USB sound card in USB 3.0 type C port in the SP7350 platform.

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