Send Audio to Multiple connected Headset

[bivay]

Hello,

I want to send audio to multiple headset(Readily avaiable from market), So is there any hardware, Software solution avaiable for that.

So, Is there any Hardware and Software Solution to send audio to multiple Headsets.

Thank You

Bivay

[Priyanka]

Hi,

We do have hardware and software solution for the same.

The nRF5340 Audio Development Kit (DK) is a hardware platform that can be used for this purpose. It is configurable and can function as a USB dongle to send or receive audio data from a PC. It can also function as a headset or a True Wireless Stereo (TWS) Earbud. 

As for the software, we have a reference application for the nRF5340 Audio DK that can be used to set up the functionality you describe using LE Audio. With two such DKs, you could have the application up and running.

LE Audio introduces the feature of Multi-Stream Audio, which allows for multiple audio streams between an audio source and different sinks.

Please take a look at the following tickets too:

https://devzone.nordicsemi.com/f/nordic-q-a/110264/stream-audio-to-bluetooth-speaker-from-nrf5340-audio-dk?ReplyFilter=Answers&ReplySortBy=Answers&ReplySortOrder=Descending 

https://devzone.nordicsemi.com/f/nordic-q-a/91163/example-app-to-stream-to-headphones?ReplyFilter=Answers&ReplySortBy=Answers&ReplySortOrder=Descending 

Hope this helps you begin.

Regards,

Priyanka

[bivay]

Thank you for your response.

How many headsets can the nRF5340 Audio Development Kit (DK) transmit audio ?

[Priyanka]

Hi,

Sorry for the delay. Theoretically, as I mentioned in my earlier comments, it should be possible to connect to unlimited multiple headsets, but I have inquired internally if we have any limitations or figures for the exact number.
The problem would be again, as seen in the link I had provided, to the range and not the number.

-Priyanka

[bivay]

As my all headset are readily avaiable in market, I need only a device which will connect to all headsets (like we do with our Mobile), and can transmit audio to individual headset. So, I think there may be limitation on multiple connected headset. That's why asking for maximum no of connected headset with nRF5340. So waiting for your response.

[Priyanka]

For broadcast audio, there's no limited number of receivers, since there's no connection between gateway and headset. Any headsets in the range of broadcaster can receive and play the stream. But all receivers are received the same stream. And now the stream number is two because of the input interface and also the CPU resource for encoding. 

For connected based audio, we haven't tested the maximum number of connected devices, but since it is connected based, so the bandwidth will be shared between each connection links, which means the more connections then less audio quality will be expected. And also, the the number of stream contents is limited with CPU resource for encoding. But we have them well tested for one gateway to two headsets.

bivay said:

I want to connect multiple headset, and also want option to send audio to specific headset.

So I guess you are looking for just a broadcast to a specific headset? Then you can use the broadcast and the broadcaster can encrypt the stream and just share the key to specific headsets. Or are you looking for two way communication, i.e. back from headset ?

Also could you tell me your specific application, i.e. what do you want this connection for?

-Priyanka

[bivay]

Sorry for delay,

I have a team having each person a headphone(Readily available in market earbuds/headsets), I want to pair  them all with this master device, this device should have ability to pair to each headset and stream audio  to all headset simultaneously. 

[Priyanka]

Hi Brevy,

For connected based audio, we have tested well only for one gateway to two headsets. We haven't tested the maximum number of connected devices, but since it is connected based, so the bandwidth will be shared between each connection links, which means the more connections then less audio quality will be expected. And also, the the number of stream contents is limited with CPU resource for encoding.

-Priyanka