We have been having a long and sometimes intense discussion on a different thread so I thought I would start a new one rather than go way off topic there.
If anyone wants to understand the fundamental aspects of acoustics here is one excellent presentation from The Great Courses company:
“How Music and Mathematics Relate”
Don’t panic. The presenter does an excellent job of going through everything step by step and the course is not expensive. He is a violinist but the concepts are entirely applicable to any instrument.
Full disclosure: I have no relationship with this company.