Voice over BTLE?

[sd]

I have a project that requires full-duplex voice comms (doesn't need to be high-quality). I'm evaluating the suitability of BTLE for the task. The new nRF52 has a PDM module for a MEMS microphone, which is a great start

infocenter.nordicsemi.com/index.jsp

but I wonder if Nordic will 'officially' provide voice comms as part of their software modules; that is, a custom protocol will not be needed to be written. I've seen similar recent offerings (half-duplex) from other suppliers, such as ST.

If anyone has experience with voice-over-BTLE with nRF51822 or insights into the new nRF52 that would be greatly appreciated.

[Hung Bui]

Hi sd,

Our closest implementation related to your question is the nRFready smart voice module . This example should be used in conjunction with the smart remote, where we can receive voice command and send it to a phone/tablet. We use a cortex-M3 to handle the DSP and compression then send it via the nRF51.

However, it's one direction only.

BLE is not ready made for voice comms since the nature of its protocol (reliable protocol) so it's hard to meet the realtime requirement as in voice communication (dropping packet when it arrives too late).

I would suggest you to contact our Regional Sale Manager to get more information on our plan to support voice with the new nRF52 chip. If you don't have the contact of our RSM in your area, please send me a PM about your location.