Klangfarbe : Vowels in Helmholtz’s Sensations of Tone
Liesl Yamaguchi · Fordham University Press eBooks · 2025
With the publication of his Lehre von dem Tonempfindungen (Sensations of Tone, 1863), Hermann von Helmholtz established the term Klangfarbe (literally, “sound-color”) as the technical designator for the quality of sound by which the ear discerns the instrument of a sound’s production (harp from horn), as well as the quality of sound by which it distinguishes one vowel from the next (A from U). The new term made it impossible, in German, to discuss distinctions between vowel sounds without speaking, simultaneously, of their “colors.” Why did the Prussian polymath introduce a color metaphor to designate a property of sound whose physical, objective structure he bears the considerable distinction of demonstrating? This chapter elucidates the contours and origins of Helmholtz’s terminology, finding that the term Klangfarbe extends to vowels only from the moment that vowels themselves are re-conceived as musical: as balances of overtones rather than signifying elements of language. Drawing out the contemporaneity of Helmholtz’s studies of musical and color perception, the chapter uncovers the traces of a failed quest to establish a physical basis for sound-color correspondence inscribed within the Sensations of Tone and Optics.