Android 上透過 DAC (i.e. 耳機或是喇叭) 再做 ADC (i.e. 麥克風) 的傳輸

看到「Quiet for Android - TCP over sound」這個給 Android 用的專案,就是以前的撥接數據機嘛... 在直接拉線對連時連速度都還蠻像的:

Quiet's provided audible mode transfers at approximately 7kbps. In cases where two devices are connected over a cable (via 3.5mm jack) it can run in cable mode, which transfers at approximately 64kbps.

拿來做一些 (邪惡的) 事情?

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