Your opinion will certainly differ from mine but I am referring to intervals that cause not just distress but brain damage, not in sound waves but in electromagnetic waves.
Imagine a microwave rifle, which has been around for over 3 decades,
but now advances in the dark arts of weaponry we have discovered the most distressing devestating dissonances in the micro wave and radio spectrum that cause micro scissor/plier like damage to soft tissue.
An acoustic equivalence will make you throw up but the electromagnetic version will not only turn your stomach but depending upon amplitude will cause permanent damage.
Sorry Charlie tin foil won't help. Now that the weaponry has been stolen I refer to the victims in US State dept workers stationed in Cuba and China.

Then there are the kinds of music that only annoys...