Mic Array to Bluetooth HFP

This project is about using the beamforming as well as the DoA estimator and streaming the obtained audio through HFP to my PC.

First Problem:

I can’t get a 16kHz HFP connection. I’m using a CSR 5810 on Windows 10. When I connect bluetooth to the Respeaker 2.0, I get an A2DP and a HFP connection. The HFP connection has 8kHz not 16, which leads to the audio stream being corrupt. What can I do?