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A mobile phone or an MP3 player tells if you're sleeping soundly
Date:11/19/2009

MSc (Tech) Vin Virtanen has developed a method for analysing snoring sounds by using a PC with a microphone connection and a wireless microphone. The objective was to create an application that could be used at home to monitor snoring. By utilizing this technology, researchers from Tampere University of Technology and the University of Helsinki have investigated sleep disorders and further refined related screening technologies. The collaboration has already spawned the smart alarm clock HappyWakeUp that was launched last year. It is the first health-promoting mobile phone application in the world.

In spring, the research team received funding from the Finnish Funding Agency of Technology and Innovation Tekes to create a sleep diagnostics service concept. Based on the technology developed by Virtanen and his colleagues, the team created a service that enables at-home screening of sleep disorders. The service was recently released on the Internet. "People can record their sleep all through the night with a mobile phone or an MP3 player. Analysis of the recording reveals the presence of abnormal sleep structures", says Virtanen. Sleep specialist Dr. Tapani Salmi MD PhD at Helsinki University Hospital emphasizes that this is a significant medical breakthrough that will shed new light on sleep structures and events during sleep.

What do the sounds of the night reveal?

The new HomeSleep application is based on the same innovation as the smart alarm clock. "The microphones of new consumer electronics devices are sensitive, process audio signals efficiently and have a large storage capacity. The microphone is placed in the bed to record the sounds produced by the sleeper's movements, such as rustle. Movements during sleep are the key in evaluating sleep quality and the prevalence of restlessness", says Salmi.

Sleep disorders are so common that they are bordering on national epidemic, but they are difficult and
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Contact: Adjunct Professor Tapani Salmi
tapani.salmi@smartvalleys.com
358-040-089-4790
Tampere University of Technology
Source:Eurekalert

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