allisonthis chart shows some weirdnesses, e.g., that the bottom 35 MIDI notes are too low in frequency for the game boy to generate, and some of the game boy's frequencies are above MIDI range. but for the most part, it looks like the curve of game boy frequencies lines up with and is in "tune" with the "correct" frequencies, which is kind of a cool trick (i'm using MIDI note frequencies as a proxy here for "correct" frequencies, which I know is debatable!)
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