Audio Issues with Lilygo T-Call Development Board - Need Assistance

[felipeeromero]

Hello everyone,

I hope you're doing well. I'm currently facing some audio problems with the Lilygo T-Call development board and I'm seeking your expertise to help me troubleshoot the issue.

Specifically, during phone calls, I'm experiencing an annoying noise that is being induced in the microphone. I have tried various configurations using AT commands, but unfortunately, I haven't been successful in eliminating the noise.

Here are some key details regarding my setup:

• Microphone Type: Electret
• Development Board: Lilygo T-Call
• Attempts: I have experimented with different AT commands configurations without any positive results. I would greatly appreciate it if anyone could provide suggestions, insights, or potential solutions to overcome this audio issue. Perhaps someone has encountered a similar problem in the past and could share their experience.

I also tried buying another antenna and increasing the distance between it and the microphone but with no succeed

Thank you very much in advance for your assistance. I'm looking forward to your valuable input.

Best regards,
Felipe