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Alexa’s ability to convey emotions is powered by Amazons’ Neural Text-to-Speech technology, and the company says “overall satisfaction with the voice experience increased by 30 percent when Alexa responded with emotions.” We guess the testers found it much more pleasing to interact with a voice AI that that doesn’t sound monotonous. By the way, Alexa could express excitement or disappointment in three different intensities, which developers could choose from to match their needs.
Listen to a highly excited Alexa here:
And a super disappointed Alexa here:
Amazon has also given Alexa the ability to adopt a speaking style suited for news and music content in the US, as well as for news in Australia. That means it can change its intonation and other aspects of its speech, so it sounds like a real anchor is delivering breaking news or a real DJ/VJ is talking about music.
This is Alexa delivering news in standard style:
While this is Alexa delivering news in its new speaking style:
As you can see (or hear), Alexa sounds more natural in the second sample, though we guess those worried about AI becoming more lifelike may not be pleased.
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