It is not possible to stream/transmit audio from an Android smartphone directly to Oticon Opn hearing aids (or any other hearing aids available today).
[B]The connectivity technology
The most modern hearing aids currently rely on Bluetooth Low Energy (BLE) for pairing with smartphones via a wireless connection. BLE is a good technology for this application since hearing aids only have ‘tiny’ batteries and therefore require technologies with low power consumption.
[B]Using BLE for data exchange with Oticon apps for both iPhone and Android phones
BLE is used to exchange data between our hearing aids and smartphones for remote control features such as regulating volume, changing programme etc.
[B]Using BLE for playing audio from an iPhone to Oticon Opn hearing aids
BLE can be used to transmit audio from an iPhone to Oticon Opn hearing aids. The BLE protocol used here is proprietary to Apple Inc. and is only available to hearing aid manufacturers through the ‘Made for iPhone’ programme.
[B]Using BLE for playing audio from Android directly to any hearing aids
The general Bluetooth standard — which also governs BLE — does not currently support audio using BLE. We expect this standard will be updated to allow audio using the BLE protocol. Once that standard is in place, it will be possible for Android phones to stream/transmit audio directly to hearing aids.
[B]How can you get wireless audio from an Android phone to hearing aids today?
Until the expected BLE audio standard is in place, the only way to have a wireless audio connection from an Android phone (or any phone except an iPhone) is to use standard Bluetooth to connect the phone to an intermediate Oticon device. This intermediate device then uses BLE to connect to our hearing aids. Oticon’s ConnectClip will do this, and we expect it to be commercially available later this year (2017).