Amazon admits that employees review “small sample” of Alexa audio

Most of the time, when you talk to an Amazon Echo device Amazon software is listening. But occasionally, Bloomberg reports, a copy of the sound is sent to a human reviewer at among many Amazon offices round the world. The human listens to the audio clip, transcribes it, and provides annotations to help Amazon’s algorithms get better.
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“We take the safety and privacy of our clients’ private information seriously,” an Amazon spokesman said in a statement emailed to Bloomberg.  “We only annotate an extremely small sample of Alexa voice recordings in order [to] improve the client experience.”
Bloomberg hints at a workforce. Bloomberg says Amazon has employees listening to audio clips in offices in Romania, Costa Rica, India, and Boston. Employees interpret as many as 1,000 audio clips in a change.
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