Mine is a dog whistle packed with condensed energy like a laser beam against a night sky. What an alien shrill of ultra high pitch. Most morning this loud scream is there to greet me. My brain used to cave into anxiety & panic attack on auto mode before I was even full awake enough to reason myself out of an attack. It was very hard for me when you feel there is not even a fighting chance against this alien. Meds were my only hope to survive my T initially. But how, the brain is hardened to the scream. Never thought it is possible back then. Never say never.