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And the endless sky over the tiles 
grows bluer as swelling birdsong fills. 
And the clearer the song is heard, 
the smaller the bird. 

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Joseph Brodsky, Stone Villages, © Farrar, Straus and Giroux, New York US

Two Pi provides distinctive Technologies for hearing healthcare:

Traverso 
Integrated solutions for Bluetooth Low Energy (BLE)

IamAllEars
Patented Methods for Interactive fitting approach

Signal processing algorithms
for hearing-related enhancement of sound