Does the web speech API send the audio to a third-party web service in order to do the speech-to-text conversion, or is everything built into the browser?

I'm trying to work out how secure this API is, for example as implemented in Chrome 25.


The speech input API specification doesn't mention how it should be implemented. But in the requirements section there is a bullet point about encrypting communications with remote speech servers[1], it's a not a requirement for now. As for Chrome, it seems to be using a remote speech to text server using a POST over https according to this article[2], note this it's about Chrome 11 and it might have changed in the recent release.

  1. http://lists.w3.org/Archives/Public/public-xg-htmlspeech/2011Feb/att-0020/api-draft.html#requirements_section
  2. http://mikepultz.com/2011/03/accessing-google-speech-api-chrome-11/

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