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The other angle is that were Alexa actually recording and sending voice data frequently, it would show up in the traffic data. Unless they're smuggling past re

The other angle is that were Alexa actually recording and sending voice data frequently, it would show up in the traffic data. Unless they're smuggling past recordings along piecemeal along with actual recordings, traffic analysis would work.

Klathmon 9y ago
Unless they are capable of doing the speech-to-text on-device, then the amount of data is negligible. Hell, if they were really crafty they could have it listen for a specific phrase or word, then send back as little as a single byte signifying that it was heard. (I own an echo and a few Google homes, and I don't actually think this is happening, but the idea is kind of fun to chase)
- sitkack 9y ago
  > Unless they are capable of doing the speech-to-text on-device, then the amount of data is negligible. What is the lowest bitrate codec and how does it compare to the plaintext version?
  - Klathmon 9y ago
    Well considering text is literally hundreds of bytes, I can't imagine audio would be able to keep up.
    - sitkack 9y ago
      Take a look at the BoE calc that someone else did in this thread, it might shed some light on what is possible.
  - deleted 9y ago
    [deleted]
- secabeen 9y ago
  Yeah, that is an interesting idea. I'm not sure anyone is making an ASIC for speech-to-text right now, but if they were, it could enable this sort of thing. Might show up in a teardown, though. A General Purpise CPU could of course, do it, but that would push the bill of materials for the device up quite a bit.