The system could also detect emotion, like joy, anger or sorrow, according to reports. The company also showed off last month how Alexa voice interactions were becoming more natural through “context carryover” – meaning you could ask follow-up questions, like “how about tomorrow?” after first asking “will it rain today?”, for example.Īnd recently, it patented tech that would allow Alexa to tell if you’re sick, then offer to sell you meds – like cough drops.

In this way, it can learn systematic relationships between segments of an audio signal that are separated in time, Amazon says. The system also factors in its judgments about preceding snippets when trying to make a judgement as to whether a new snippet is a whisper or alarm. The incoming audio signals are broken into ultrashort snippets, and the long short-term memory network processes them in order, the company explained in September. Whisper Mode is one of several features Amazon has been working on to make Alexa more context aware.įor example, the assistant knows that a command to “play Hunger Games” likely means launch the movie, if asked on a device with a screen, while the same command to an Echo speaker would start the audiobook instead.Īlso at Amazon’s September event, the company showed off a forthcoming smart-home feature for Echo devices called “ Alexa Guard.” This sound-detection technology will allow Alexa to recognize smoke alarm, carbon monoxide alarms, and the sounds of glass breaking.īoth Alexa Guard and Whisper Mode use a machine-learning network known as a “long short-term memory,” explained Alexa head scientist Rohit Prasad.

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