I have a musical ear that can notice. I can also research frequencies (sound, physics) to figure out more about what is happening. But mainly I have a good ear. Please tell me if I can help you as a former engineer who has a good ear.
Hi patpat I recognize your username from somewhere. New volunteer. Don't know how to get involved. Don't have anything but accidental amateur experience and a job layoff from automation & process control. But I recognize you from online somewhere unless there is another patpat.