voice transmission using nrf52

RE: voice transmission using nrf52

Ankush — Tue, 21 Jun 2016 13:36:26 GMT

Thank you all !! I will start with getting voice over microphone using i2s. This information is helpful to me. I will try all this and if I stuck at any point, I will revert to you.Thank you once again!!

RE: voice transmission using nrf52

Wojtek — Tue, 21 Jun 2016 13:27:23 GMT

I think you should use i2s interface to connect microphone to nrf52. There is i2s example in SDK, you can begin with that. And when you have the voice stored as digital data, you just transmit it by BLE (ex. by NUS service) or by ShockBurst if you need higher data rate... You have to do calculations of throughput, microphone sampling rate etc to know if you are (and how much) able to store & transmit the data... it is hard to help you only with that informations.

RE: voice transmission using nrf52

Ankush — Tue, 21 Jun 2016 13:20:46 GMT

Thanks for your response.Yes I can use voice as normal data.I want to use microphone to read the voice but I don't know how to use microphone with nrf52. Do you have any solution to this?

RE: voice transmission using nrf52

Jorge — Tue, 21 Jun 2016 13:18:17 GMT

Yes, you can transmit voice using nrf52. I sent audio (more music, but voice is the same) between two nrf51, so the nrf52 should work too. And if you only need one way you can achieve good quality. I used NUS, but you can choose other profiles and just change the data to your audio data!

RE: voice transmission using nrf52

Wojtek — Tue, 21 Jun 2016 13:09:46 GMT

Why don't just treat voice as normal data? You can transmit it using ex. NUS service (via BLE) or by ESB if higher throughput is needed. You need to do calculations how that voice is sampled (frequency and resolution) and then fit it somehow... you want to connect microphone to nrf52 or what?

RE: voice transmission using nrf52

Ankush — Tue, 21 Jun 2016 13:07:16 GMT

i want to transmit the speech signal to another nrf52 kit.not necessarily in real time .As I am a beginner, Can you suggest some flow for this or any sample example.

RE: voice transmission using nrf52

Wojtek — Tue, 21 Jun 2016 12:52:04 GMT

You can transmit whatever you want, as long as you fit in the throughput... what "voice" do you want to send? is it needed to be transmitted in real time?