On Friday, 16 March 2018 11:09:01 UTC, J.B. Wood  wrote:
> Hello, all.  My question is about where Amazon's "Alexa" voice responses
> are generated.  Are they generated by a synthesizer on the local device
> (e.g. an Echo or Dot) or do they originate at the Amazon central server
> and then are sent/streamed to the local device to be played like a music
> file (e.g. mp4 or aac)?

They appear to be streamed, as it's possible for 'skill' developers to upload
custom audio to Amazon's server to be streamed out along with the speech.

https://developer.amazon.com/docs/custom-skills/speech-synthesis-markup-languag
e-ssml-reference.html

Owain

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