We get a lot of 'show me the measurements' requests to what we hear. We are not engineers or whatever it is you need to be to have measurements. But we do trust our ears. Then some say you cannot trust your ears. So I thought this had a nice reasonable comment on how this gentleman feels. I think he has some credentials to say what he does.
At about 9:30 in the video this man states how he feels if you cannot measure something yet still hear it.
https://www.youtube.com/watch?v=grzoqEb2KMk&feature=youtu.be
At about 9:30 in the video this man states how he feels if you cannot measure something yet still hear it.
https://www.youtube.com/watch?v=grzoqEb2KMk&feature=youtu.be