This technique is also used in the study of subharmonic and superharmonic functions. It approximates the eleventh subharmonic (G), 16&colon;11 (648.68 cents). Every utonality is therefore composed of members of a subharmonic series. As a consequence for a sinusoidal wave input additional harmonic and subharmonic frequencies are generated. Other uses for subharmonic synthesizers include the application in bandwidth extension. Similar properties can be shown for subharmonic functions. Three other short-lived labels were created after the demise of the Subharmonic deal. Harmonic and subharmonic orbits are special types of such closed orbits. The complex tones of acoustic instruments do not produce partials that resemble the subharmonic series. The researchers observed a subharmonic oscillation of the drive. The hybrid term subharmonic is used in music in a few different ways. A better, narrower definition requires that the harmonic (or subharmonic) series members be adjacent. Then "f" is called "subharmonic". The nineteenth subharmonic is a major sixth, A = 32/19 = 902.49 cents. Subharmonic functions can be defined on an arbitrary Riemannian manifold.