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Instrumentation and measurement

Instrumentation and measurement

‘Smart speaker, tell me about your acoustic sensor’

09 Dec 2020
Taken from the December 2020 issue of Physics World.

Smart speakers that can register our everyday commands have become commonplace in homes around the world. While the acoustics sensors inside these devices are far flung from the first microphone, the technology is still evolving, as Pip Knight explains

Smart speaker in a living room
(Courtesy: Shutterstock/David Ferencik; IOP Publishing/Mat Ward)
“Alexa, play some Christmas music.” “OK Google, turn on the fairy lights.” “Hey Siri, how

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Pip Knight is an undergraduate at the University of Cambridge, UK, studying natural sciences, e-mail pjk58@cam.ac.uk
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