Streaming Audio over Cell? NOTE-NBNA-500

Hardware
1

Hello.
I am looking to stream audio over cellular. It is a mono channel and will not be compressed. Bandwidth of signal is ~12kHz.

  1. Can someone tell me if it is possible to do this with the NOTE-NBNA-500?
  2. Is there a development board for this card as I most likely will want to do a proof of concept and wire to an Nucleo-STM32 board?

Thank you.

2

Hi @ridgerunnersjw,

Unfortunately this isn’t currently possible with the Notecard. Notecards are on a secure VLAN, isolated from the internet. So this functionality would require our current HTTP Proxy to support a bidirectional streaming mode that would go from Notecard ↔ VLAN ↔ Notehub ↔ customer server. We have talked about it, and understand what would need to be done, but have not found a customer who needs this capability at scale for this to make sense for us to implement.

Thanks,
Rob

3

@RobLauer …Hi Rob.
Thank you for the response. I apologize for any confusion. Just to clarify I am doing a proof of concept design streaming 12 bit, 10k-12khz over cellular. My design would use Blues Starter Kit for Cell+WiFi. So my hope is to just sample data using the STM32 with the kit, possibly ping pong some RAM and send it over cellular to some service like AWS, etc. I am hoping not to need wifi that is with the dev kit.

With that said do you think my idea is possible? If not could you explain? I don’t have a full grasp of VLAN so maybe to your earlier point there is still an issue…

I really don’t see any difference between this and a sensor that your stuff works with it’s just a higher frequency and possibly the streaming.

Thanks
Steve

4

Hi @ridgerunnersjw,

It’s the literal “streaming” part that we can’t handle. If you want to record sampled data, save it to flash, and send those binary objects to an endpoint, that’s totally fine!

5

@RobLauer …OK Thank you!