![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTo5B8H-E-pLcsNb2Z5KlzR9W67ssk__V52B78iw12tUVQPcN0Lbx_NUqGqBhe1VXwQVDHSwpJhbSm5ABHuKTLUIaeMJa-WLP_xpz3MgiSku-eQer9JDn0i3KyMcxRWEJzI_dTq9zEDfc/s320/Noise+tshirt.jpg)
The Noise Shirt and its hanger/charger
The Tampere University of Technology is working on machine washable and wirelessly rechargeable wearable technology.
They prototyped a Noise Shirt which has a microphone that measures the surrounding environments noise level and displays it as a vertical 5 step equalizer bar with the LEDs. Each LED marks a rise above a certain decibel level. The three lower LEDs go from 65dB to 84dB. The top two LEDs mark a noise level exceeding 85dB and 100dB. Continuous exposure exceeding 85dB is the limit set by the European Union for recommended use of hearing protection.
The device has a small battery with a wireless recharging induction loop in the neck tab. The garment is functional whenever charged and won’t require any user input.
The team created a special clothes hanger for wirelessly recharging the shirt. The hanger is shaped to make the shirt’s neck tab drape over the hanger neck, to make the two inductive coils meet.
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The system takes about 3 hours to recharge the empty Lithium-polymer battery and depending on the amount of ambient noise the Noise Shirt will run from 2 to 4 hours.
The next step in the research is using wireless communications and a mobile user interface in order to access services and applications produced outside the garment.
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