@Food not really, no... that's a plot representing how much two frequencies (according to their difference in cents) might be expected to sound consonant because of being close to a small-integer ratio. Not a physical effect or a spectrum, but a model of human perception.

@mattskala ah the critical bands??

@Food more abstract than that - based on the idea (which may NOT reflect biological reality) that we hear consonance when harmonics coincide. It's explained in the Web log entry I linked. That diagram is part of a line of work I ended up rejecting, but I used it as the headline image because it's pretty.

@mattskala reminds me of phase locking a bit
https://mastodon.art/media/6sXIoMZMWWkCE6b2Sg4