Nordic Semiconductor's proprietary 2.4GHz wireless technology is being employed by world-leading Danish hearing solutions company, GN ReSound, in its ReSound Alera hearing aid product, which enables users to wirelessly stream audio from common consumer electronics devices such as TVs and smartphones (the latter via a chest-worn Bluetooth wireless technology microphone clip) direct to their hearing aid(s) over a range of up to 20 meters.
In operation, the end user simply connects their TV (via a SCART cable) or other device to a small audio streamer box equipped with a Nordic nRF24L01+ 2.4GHz transceiver. This then pairs with a second nRF24L01+ located in the ReSound Alera hearing aid. When the user wishes to watch TV they simply push a button on the back of their hearing aid or use a (cost optional) remote control to select the device’s designated wireless channel (typically between 1 and 3) to immediately stream wireless audio in stereo direct from the TV to their hearing aid.
“It was extremely challenging to achieve this ease of end-user functionality, along with medical-grade [99.99%] field reliability and real-time audio performance in a hearing aid as small as [for the latest ReSound dot2 product] an adult finger nail weighing as much as a paper clip,” admits Thomas Olsgaard, VP of Hardware Platforms at GN ReSound.