spectral analysis

Hi wonderful AV reader! I would love your help to figure out what is happening with my brand new car's speakers. I believe something is wrong with the fancy 21-speaker audio system in the 2024 (not previous years) Lexus RX 350h and TX (and other models) and I need YOUR help to prove it. ASK...

Hi all, I'm a mechanical engineer looking to do some acoustic analysis of a small device. I cant declare what it is that I am working on due to confidentiality, but I have a pretty solid analogy for it. Imagine a train conductors whistle, which has a cork ball in it to create that signature...