Overtones are the subtle meanings that words put together have. Overtone has a music-related definition— a musical tone that is higher than the fundamental tone —that it does not share with undertone. Overtones means the harmonic sequence above the Fundamental. The first is the harmonic 5th, then the octave, and then things get complicated. So the fundamental of "A 440" is exactly 440 cycles per second. As nouns the difference between fundamental and overtones is that fundamental is a leading or primary principle, rule, law, or article, which serves as the groundwork of a system; essential part, as, the fundamentals of linear algebra while overtones is. Using the model of Fourier analysis, the fundamental and the overtones together are called partials. Overtones means the harmonic sequence above the Fundamental. Using the model of Fourier analysis, the fundamental and the overtones together are called partials. The first is the harmonic 5th, then the octave, and then things get complicated. So the fundamental of "A 440" is exactly 440 cycles per second. As nouns the difference between fundamental and overtone. As an adjective fundamental And undertone has a definition— a hushed tone or sound —that it does not share with overtone. Fundamentals are just reading what is in front of you and not looking for the meaning behind the words. The fundamental is the root frequency as a tone generator would make it. is that fundamental is a leading or primary principle, rule, law, or article, which serves as the groundwork of a system; essential part, as, the fundamentals of linear algebra while overtone is (physics|music) a tone whose frequency is an integer multiple of another; a harmonic. The fundamental is the root frequency as a tone generator would make it. An overtone is any frequency greater than the fundamental frequency of a sound. An overtone is any frequency greater than the fundamental frequency of a sound.