Psychoacoustics

thumb|right|upright=1.35|Barbershop quartets, such as this US Navy Band ensemble, sing four-part pieces, made up of a [[melody line (normally the lead) and three harmony parts. ]] In music, harmony is the concept of combining different sounds in order to create new, distinct musical ideas. Theories of harmony seek to describe or explain the effects created by distinct pitches or tones coinciding with one another; harmonic objects such as chords, textures and tonalities are identified, defined, and categorized in the development of these theories. Harmony is broadly understood to involve both a

perceptual property in music ordering sounds from low to high

term in acoustics

Psychoacoustics is the branch of psychophysics involving the scientific study of the perception of sound by the human auditory system. It is the branch of science studying the psychological responses associated with sound, including noise, speech, and music. Psychoacoustics is an interdisciplinary field including psychology, acoustics, electronic engineering, physics, biology, physiology, and computer science.

Hyperacusis is an increased sensitivity to sound and a low tolerance for environmental noise. Definitions of hyperacusis can vary significantly; it often revolves around damage to or dysfunction of the stapes bone, stapedius muscle or tensor tympani. It is often categorized into four subtypes: loudness, pain (also called noxacusis), annoyance, and fear. It can be a highly debilitating hearing disorder.

Phonophobia, also called ligyrophobia or sonophobia, is a fear of or aversion to specific sounds—a type of specific phobia as well as a form of auditory hypersensitivity. Occasionally it is called acousticophobia. Although some sounds could be feared by most people, such as certain loud sounds or sounds that signal threats, fears of these sounds would not be considered phonophobia unless the amount of fear and anxiety was disproportionate. In phonophobia, the feared sounds may be ones that are soft and non-damaging, such as kitchen sounds or a door closing. Another example is watching someone

A mondegreen () is a mishearing or misinterpretation of a phrase in a way that gives it a new meaning. Mondegreens are most often created by a person listening to a poem or a song; the listener, being unable to hear a lyric clearly, substitutes words that sound similar and make some kind of sense. The American writer Sylvia Wright coined the term in 1954, recalling a childhood memory of her mother reading the Scottish ballad "The Bonnie Earl o' Moray", and mishearing the words "laid him on the green" as "Lady Mondegreen".

sound with a sinusoidal waveform

false perceptions of a real sound or outside stimulus

neurodevelopmental disorder that affects how the brain processes sounds

frequency characteristics of hearing and perceived volume

empirical relationship in psychophysics between actual and perceived changed intensity of stimulus

auditory frequency metric

conceptual scale

aspect of harmonic sounds

Psychoacoustical phenomenon

process of hearing and understanding language

early theory of language processing

Diplacusis, also known as diplacusis binauralis, binauralis disharmonica or interaural pitch difference (IPD), is a hearing disorder whereby a single auditory stimulus is perceived as different pitches between ears. It is typically experienced as a secondary symptom of sensorineural hearing loss, although not all patients with sensorineural hearing loss experience diplacusis or tinnitus. The onset is usually spontaneous and can occur following an acoustic trauma, for example an explosive noise, or in the presence of an ear infection. Sufferers may experience the effect permanently, or it may r

technique of speech repetition

beginning of a musical note or sound

hypothetical neural stimulation for altering states of consciousness

representation of auditory sensation and perception in the nervous system