I’ll do a second try to get some help for my problems with the BC127 module.
I am having an application with analog audio signals that needs beeing transfered by bluetooth to a headset.
The still existing problem is that for some reason Audio signals are mixed with noise, so the signal to noise ratio becomes bad and sound is bad as well.
After a long period of testing with different setups and different hardware now I am pretty shure, that there must be something like an ‘automatic gain control’ which I connot disable. The reason why I am sure is that when I feed in a ‘normal’ audio level, then the headset volume is OK and seems to be steady. When I reduce the input signal level, then mostly the headset volume goes down at first, but then it becomes louder again, mixed with the noise.
Is there anybody from SIERRA side who can explain this behaviour and let me know how I can disable this functionality?
Any help is much appreciated