Bluetooth LE Audio from legacy devices

Auracast broadcast audio enabled 

The Nordic-powered LE Audio transmitter delivers low latency (~25 ms) True Wireless Stereo and long range wireless connectivity (up to 100 m line-of-sight), while significantly reducing power consumption compared to Bluetooth Classic. Auracast enables the audio source to broadcast audio streams to an unlimited number of devices allowing, for example, the wearer of Auracast-compliant hearing aids to hear the audio stream clearly, while their family members can simultaneously listen at a comfortable volume directly via the audio source, or through their own Auracast-compliant headphones or earbuds. 

The FSC-BP401 Bluetooth Audio Transmitter employs the nRF5340 SoC’s dual Arm® Cortex®-M33 processors – comprising a high performance application processor capable of DSP and Floating Point (FP) alongside a fully programmable, ultra low power network processor. The application core manages both the LE Audio codec and the codec for Bluetooth Classic audio, while the Bluetooth LE protocol is supervised by the network processor. The LE Audio connectivity is made possible through the nRF5340 SoC’s 2.4 GHz multiprotocol radio featuring 3 dBm output power and -98 dBm RX sensitivity for a link budget of 101 dBm.  

“The nRF5340 SoC provided the size, Arm CPU capability, and reliability we needed for our Bluetooth Audio Transmitter, while the nRF Connect SDK helped us get up and running quickly with our application code,” continues Ouyang. “Nordic also has first class engineers and a friendly technical support ecosystem that provides excellent documentation and fast response.”