Mistuning
Encyclopedia
In music
mistuning is most generally the action of incorrectly tuning
or the state of being out of tune. Mistuning is also the displacement of a pitch a semitone away from its standard position in a stable tonal structure such as the most common perfect fourth or fifth, which mistuned in the opposite directions produce a tritone
. A portion of the alpha chord:E-G-C-E, may be considered an E major chord: E-G-B-E, whose members are mistuned. (Wilson 1992, p.9) See alteration and chord substitution
.
In mechanics
mistuning is a lack of symmetry present in a real object that ideally is perfectly symmetric.
This phenomenon is studied for example in the turbine disks; it can cause an increase of the forced response that can bring to unexpected failures due to fatigue. Mistuning is caused by manufacturer tolerances, non homogeneity of the material, the usage, etc., and so it is unavoidable.
It has been observed that the amount of increase in the forced response of mistuned turbine disks strongly depends on the physical characteristics of the disk itself: actual efforts to limit the negative effects of this phenomenon into turbine disks are to understand how to design a disk that is not much influenced by mistuning in the working rotational speed.
Music
Music is an art form whose medium is sound and silence. Its common elements are pitch , rhythm , dynamics, and the sonic qualities of timbre and texture...
mistuning is most generally the action of incorrectly tuning
Musical tuning
In music, there are two common meanings for tuning:* Tuning practice, the act of tuning an instrument or voice.* Tuning systems, the various systems of pitches used to tune an instrument, and their theoretical bases.-Tuning practice:...
or the state of being out of tune. Mistuning is also the displacement of a pitch a semitone away from its standard position in a stable tonal structure such as the most common perfect fourth or fifth, which mistuned in the opposite directions produce a tritone
Tritone
In classical music from Western culture, the tritone |tone]]) is traditionally defined as a musical interval composed of three whole tones. In a chromatic scale, each whole tone can be further divided into two semitones...
. A portion of the alpha chord:E-G-C-E, may be considered an E major chord: E-G-B-E, whose members are mistuned. (Wilson 1992, p.9) See alteration and chord substitution
Chord substitution
In music theory, chord substitution is the use of a chord in the place of another related chord in a chord progression. Jazz musicians often substitute chords in the original progression to create variety and add interest to a piece. The substitute chord must have some harmonic quality and degree...
.
In mechanics
Mechanics
Mechanics is the branch of physics concerned with the behavior of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment....
mistuning is a lack of symmetry present in a real object that ideally is perfectly symmetric.
This phenomenon is studied for example in the turbine disks; it can cause an increase of the forced response that can bring to unexpected failures due to fatigue. Mistuning is caused by manufacturer tolerances, non homogeneity of the material, the usage, etc., and so it is unavoidable.
It has been observed that the amount of increase in the forced response of mistuned turbine disks strongly depends on the physical characteristics of the disk itself: actual efforts to limit the negative effects of this phenomenon into turbine disks are to understand how to design a disk that is not much influenced by mistuning in the working rotational speed.
Source
- Kárpáti, János (1975). Bartók's String Quartets. Translated by Fred MacNicol. Budapest: Corvina Press. Cited in Wilson (1992).
- Wilson, Paul (1992). The Music of Béla Bartók. ISBN 0-300-05111-5.