Tuning, timbre, spectrum, scale

by William A. Sethares

The only things truly universal in music are those that are based on biological and/or perceptual facts. Tuning Timbre Spectrum Scale focuses on perceptions of consonance and dissonance, which are defined in the Harvard Dictionary of Music: "Consonance is used to describe the agreeable effect produced by certain intervals as against the disagreeable effect produced others. Consonance and dissonance are the very foundation of harmonic music... consonance represents the element of smoothness and repose, while dissonance represents the no less important elements of roughness and irregularity.^ Tuning Timbre Spectrum Scale begins by asking (and answering) the question: How can we build a device to measure consonance and dissonance? The remainder of the book describes the impact of such a "dissonance meter" on music theory, on synthesizer design, on the construction of musical scales and tunings, on the design of musical instruments, and introduces related compositional techniques and new m