The Physics Of It All 6:39. 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. Two pure tones played together: Loudness. A bit more about medieval music—and meter 2:32. Linear and non-linear superposition . Introduction to Consonance and Dissonance 4:46. Perceived sound properties, as pitch, timbre and loudness, have their physical correlates in wave properties (i.e., fundamental frequency, waveforms and amplitude of wave). But consonance and dissonance do also have a strong physical basis in nature. Try the Course for Free. Marc Lowenstein. Transcript. Festinger wrote a second book in 1964 that provided additional inspiration. 7.3 Pure Tones, Consonance and Dissonance. In physics sound is pressure changes in the air or other medium and is represented as a wave. 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. Festinger (1957) repackaged much of Heider’s reasoning as dissonance avoidance where dissonance is the opposite of consonance. The Culture & Context You Swim In 10:36. published a book containing 84 chapters of scientific … The plot is similar to an inverse of a consonance curve generated by Plomp and Levelt , and to dissonance curves calculated by Sethares [2 (p 100)] and Helmholtz [3 (p 193)]. We stated that beat frequencies in the range of 10 – 50 Hz are annoying to the ear. Consonant intervals. Roy E. Disney Family Chair in Musical Composition. Sample audio files with oscillograms and spectra. In 1968, Abelson et al. Consonance -> beats -> roughness -> separate notes. Taught By. We briefly discussed the perception of consonance and dissonance of pure tones in Section 5.5. 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. Linear and non-linear superposition of two sine waves using circuits with resistors and a diode. In simplest terms, the sound waves of consonant notes "fit" together much better than the sound waves of dissonant notes. Festinger’s work inspired other social psychologists to conduct many highly original experiments. Tuning using beats. A Three-Minute History of Medieval Music 12:01. Lissajous figures. The Functional Relationship 10:02.
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