the.com/harmonics
the ghost notes that make a single string sound like a whole choir.
means the higher-frequency overtones riding above a fundamental pitch, whose mix gives every sound its distinct color.
from from greek harmonikos, fitting together; pythagoras heard it first around 500 bce, plucking strings and noticing that simple ratios like 2:1 and 3:2 made pleasing sounds.
pythagoras discoveryfound ratios by dividing a single vibrating string.
timbre makersame pitch, different overtones, is why violin beats trumpet.
guitar tricktouching a string lightly kills the fundamental, isolates overtones.
human voicevocal formants are harmonics shaped by mouth and throat.
for instance
guitar pinch harmonics — zakk wylde and billy gibbons built solos on squealing overtones.
tibetan singing bowls — struck metal rims ring with audible stacked harmonics.
whale song harmonics — humpback whales layer overtones across octaves underwater.