Transcript. Linear and non-linear superposition . The plot is similar to an inverse of a consonance curve generated by Plomp and Levelt [10], and to dissonance curves calculated by Sethares [2 (p 100)] and Helmholtz [3 (p 193)]. For example, if two notes are an octave apart, there will be exactly two waves of one note for every one wave of the other note. The Physics Of It All 6:39. In 1968, Abelson et al. But consonance and dissonance do also have a strong physical basis in nature. Festinger’s work inspired other social psychologists to conduct many highly original experiments. Linear and non-linear superposition of two sine waves using circuits with resistors and a diode. Festinger (1957) repackaged much of Heider’s reasoning as dissonance avoidance where dissonance is the opposite of consonance. In simplest terms, the sound waves of consonant notes "fit" together much better than the sound waves of dissonant notes. Sample audio files with oscillograms and spectra. Perceived sound properties, as pitch, timbre and loudness, have their physical correlates in wave properties (i.e., fundamental frequency, waveforms and amplitude of wave). Consonant intervals. In physics sound is pressure changes in the air or other medium and is represented as a wave. A Three-Minute History of Medieval Music 12:01. published a book containing 84 chapters of scientific … Roy E. Disney Family Chair in Musical Composition. The Culture & Context You Swim In 10:36. We briefly discussed the perception of consonance and dissonance of pure tones in Section 5.5. Lissajous figures. Introduction to Consonance and Dissonance 4:46. Taught By. Try the Course for Free. We can now explain this in a bit more detail based on the structure of the ear that we developed in the last two sections. We stated that beat frequencies in the range of 10 – 50 Hz are annoying to the ear. Taking into consideration these dimensions means understanding consonance and dissonance in an embodied context, in which arithmetic, physics, psychology and physiology are part of a complex and dynamic process of understanding, which is not reducible to any privileged explanatory level. 7.3 Pure Tones, Consonance and Dissonance. Marc Lowenstein. Consonance -> beats -> roughness -> separate notes. Tuning using beats. Festinger wrote a second book in 1964 that provided additional inspiration. Two pure tones played together: Loudness. A bit more about medieval music—and meter 2:32. The Functional Relationship 10:02.