Hi,
Our circuit schematic is as follows:
https://drive.google.com/file/d/1DCwJkGVyJ36NC31igP-qJxRx9YhHtSJf/view?usp=sharing
An ECM microphone is connected to CON2, and audio is captured via the MIC1RP/LINE1RP input path (single-ended).
On the output side, we use the HPROUT (single-ended) line connected to a Class-AB amplifier, which then drives an 8Ω speaker.
In our firmware, we have disabled HPLOUT, HPRCOM, and HPLCOM.
Currently, the output sound from the speaker is very low—one must be very close to hear it—and there is noticeable noise.
May I ask if there is any issue with our hardware or firmware design that could be causing this?
Thank you!
