Does nRF5 SDK includes UAC(USB Audio Class) example demo?

[SeanOY]

Hi engineers,

I want to achieve a demand that receive audio/HID data from the PC side through USB interface and transmit data through BLE to other devices.

So has the nRF SDK already included the example about UAC? Thanks! 

Best Regards,

Sean

[SeanOY]

SeanOY said:

Thanks

I see the max theoretical value of nRF52833 bandwidth in the feature list is 2Mbps. So if the audio parameter is like this. 

- Bit depth: 16bit

- Sample rate: 32kHz

- Audio channel: mono(1 channel)

- Unidirectional transmission

The least theoretical value I need is 16*32k*1 = 512k < 2M, but how to calculate the latency? 

[Kenneth]

2Mbps is the on-air data rate during transmission. It does not take into account startup and switching time of the radio. It does not take into overhead, bi-directional data and re-transmissions. It does not take into account that communication is synchronized at specific connection intervals. So unfortunately the actual throughput in a real scenario is lower, you cannot expect sustained 512kbps. The latency will depend on the connection interval and re-transmissions that may occur due to interference. It can be as high as several tens of ms (e.g. 100ms) under some situations, it will likely vary, so you would need to buffer quite a lot of data.

Best regards,
Kenneth

[SeanOY]

So it actually cannot transmit such large data. May I ask what's the actual max data rate by measuring?