HappyWakeup!
A smart alarm clock for mobile phones called HappyWakeUp has been developed by two Finnish universities, Tampere University of Technology and the University of Helsinki.
The smart alarm clock gives an alarm signal in the morning just before the ultimate alarm time, if the sleeping subject is awake or "almost awake" due to the natural sleep rhythms.
'The appropriate almost-awake moments are detected by using a microphone and statistical analysis of voices. During the last 20 minutes before the ultimate alarm time, the analysis is activated to give a soft alarm signal, if there are movements indicating that the sleeping subject is awake or "almost awake'
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