I hear this all the time when listening to almost any voice that has more than the minimum expression in the form of varied pitch. I wrote a program to detect

I hear this all the time when listening to almost any voice that has more than the minimum expression in the form of varied pitch. I wrote a program to detect the most apparent rhythms from arbitrary sound input. It was based on the Echo Nest API. I was able to extract a few lines out of spoken word texts that had clear 4 on the floor rhythms. But my project left pitch alone. We unconsciously vary aspects of our prosody to reflect our meaning, intention, mood, etc. You can even hear the children (at the bottom of the page) embellish the woman's loop with more consonant tones, e.g. on the syllable "strange". If you listen very, very closely you can hear them alternate between strict reproductions of the tenser tones and their own re-editing to make it sound more consonant or friendly. I posit this is their mind playing along with a game of how they want to make it sound vs. complying with their leader. NPR and most advertising makes me very uncomfortable as they're parroting each other's attention-grabbing prosodies, imitating tones of danger, confusion and great curiosity. And of course, one of the great modern masters of hearing inherent pitches is Mono Neon: https://www.youtube.com/watch?v=QA2-eKbfaWI https://www.youtube.com/watch?v=QA2-eKbfaWI