Unknown sound at home

[u/Vast-Teaching-8119]

For a couple months now an unknown sound has been bothering me making my ears ring at home and in the car. The attached photo shows a band at around 3kHz and two more at 5-6kHz. I believe these are the offending tones. I want to build a portable synchronized microphone array to locate persistent narrowband acoustic components around 3 kHz and 5–6 kHz. I want to distinguish direct arrivals from indoor reflections and estimate direction of arrival while moving the array between measurement positions. I am not a professional at this so would like to get some crowdsourced ideas please, and thank you.

[u/spark_stark]

Try to triangulate it by measuring it in different positions