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Denzil Wraight

(Fr. archiquier, eschaquier, eschiquier; Ger. Schachtbrett; Lat. scacarum, scacatorum; Sp. eschaquer, scaquer)

The earliest term used in archives and other writings to denote a string keyboard instrument. Its exact meaning is still the subject of debate and research, but it is probable that most references are to a clavichord. There appears to be no Italian equivalent of the name; Farmer suggested that it is derived from the Arabic ‘al-shaqira’ and tentatively identified this as a virginal, but there is no supporting evidence. Some writers identified the chekker as an upright harpsichord (i.e. a Clavicytherium), since a letter written to Juan I of Aragon in 1388 referred to ‘an instrument seeming like organs, that sounds with strings’, but the instrument was not named. Galpin (Grove4, suppl.) believed that the Dulce melos described by Arnaut de Zwolle (c1440) was identical with the chekker. However, instruments with hammer action, such as the dulce melos, appear to have been rare, whereas the name ‘chekker’ appears frequently, and there is no evidence to support this identification. Galpin further suggested that the chekker’s name was derived from the fact that the action was ‘checked’, in the sense that the motion of its keys was stopped by a fixed rail; this is unconvincing and could in any case apply to a clavichord, a harpsichord or a virginal. These suggestions can therefore be disregarded....


Murray Campbell

(b Cleveland, OH, July 19, 1915; d Pittsburgh, PA, Feb 10, 2010). American scientist and acoustician. After studying physics at Case Institute of Technology (BS 1937), he carried out research in nuclear physics at the University of Illinois (PhD 1941). He then joined the Westinghouse Electric Corporation, remaining with the firm for the rest of his professional life; he retired in 1980 after a distinguished career culminating in six years as Director of Research and Development. In his youth he had become an accomplished flute player, and during his undergraduate studies at Case he encountered the notable acoustician Dayton C. Miller. This meeting led to a lifelong interest in the acoustics of the flute, and Coltman developed a laboratory at his home in which he conducted many important and illuminating experiments on flutes and flute playing. Particularly significant was his contribution to the understanding of the subtle interaction between the air jet blown across the flute embouchure hole by the player and the resonances of the air column within the flute pipe. Over four decades, starting in the mid-1960s, he published more than 40 papers on the acoustics of flutes and organ pipes. He was a member of the National Academy of Engineering and a Fellow of the American Physical Society and the Institute of Electrical and Electronic Engineers....


Owen Jander

revised by Tim Carter

In music, the relation between verbal stress and melodic accent in the setting and delivery of a text. Clear and appropriate text setting, measured by quantity or quality, was extolled by humanist thinkers in the Renaissance on the basis of classical precedent, and it was central to the emergence of recitative and the ‘new music’ in Florence during the late 16th century. Throughout the Baroque period, the notion of the musician as orator, persuading and moving an audience, depended on proper declamation. The subject was often discussed by theorists, particularly as clear declamation became threatened by the more musical demands of the aria. J.G. Walther (WaltherML) applied to music the rationalistic concept of declamation, which originally dealt with speech, and focussed his attention on recitative. J.J. Rousseau (Dictionnaire, 1768) dealt with declamation as the relationship between musical and linguistic accent, which had been much discussed in French singing treatises, such as Bénigne de Bacilly’s ...


Edwin M. Ripin

revised by Martin Renshaw


Stephen E. Hefling

Rhythms in which long notes alternate with one or more short notes, so called because the long notes are usually written with the aid of the dot of addition (see Note values). Dotted rhythms are found in mensurally notated music of all periods; this article, however, deals mainly with music of the 17th and 18th centuries, in which it was customary to alter certain sorts of written rhythmic values in performance (see also Notes inégales; for notational meanings of the dot before 1600 see Notation, §III). The principal issue is the degree to which such rhythms sounded uneven, rather than the specific manner of their notation (e.g. the dot may be replaced by a rest or tie).

Dozens of contemporary theoretical and pedagogical sources indicate that the dot was ordinarily equal to one half the value of the note or rest preceding it, just as it is today. But the treatises also present various exceptions. The dot could stand for a tie (...



Murray Campbell and Mary Térey-Smith

The repetition of sound after a short time interval. In addition to the applications discussed below the term is used for a signal-processing device (also known as a delay) that produces a slightly delayed playback of sounds either by a tape loop or by digital delay; see Electric guitar §2 .

See also Organ stop .

Natural echoes arise from the reflection of a sound wave by a solid surface, such as a wall or cliff. For the echo to be perceived as distinct from the original sound, the extra path length travelled by the reflected sound wave must have a minimum value of around 17 metres, corresponding to a minimum time interval of 50 milliseconds between direct and reflected sounds.

The reverberant sound field in a concert hall is created by multiple reflections of sound waves. In a well-designed hall, the direct sound reaching a member of the audience is followed by a series of reflections within a time interval of around 35 milliseconds. These ‘early delayed arrivals’ are not heard as separate echoes; because of the ‘precedence effect’ they are perceived as a reinforcement of the direct sound. Subsequent reflections blend smoothly into the reverberation. A concave surface, focussing sound waves into a particular part of the hall, can give rise to an audible echo; a ‘flutter echo’ can arise from successive reflections between parallel walls....


Laurence Libin

Many types of instruments throughout the world have been assigned male, female, or sometimes ambivalent gender. These attributes, rooted in prehistoric animism and sexual dualism, bear on the perceived nature of the instruments themselves (which might be thought to embody male or female spirits, or to personify abstract sexualities) and also on their musical and social functions and the circumstances surrounding their making and playing. Even if an instrument is not given a gender, customs may govern whether it is appropriate for use by men or women or both. An attribution depends on many aspects of an instrument and a society’s attitude toward those aspects, among them morphology (e.g. phallic, like many bagpipes; womblike, like many bells and drums; or evoking pregnancy, like the rounded body of a lute), material, means of sound production (e.g. blowing, beating, stroking), high or low pitch, sound quality and power or affect, degree of apparent physical effort involved in playing, and playing posture (e.g. many Victorians considered holding the cello between the legs unladylike; in Kerala, India, a woman who raises her hand near her breast in order to strike a drum could appear immodest)....


D. Quincy Whitney

(b Springfield, MA, May 24, 1911; d Wolfeboro, NH, Aug 7, 2009). American violinmaker, acoustician, and writer. A trumpeter and biology graduate of Cornell University (AB 1933) and New York University (MA 1942), she left both disciplines to embrace string instruments and acoustical physics. While teaching science and woodworking at the Brearley School, chamber music colleagues convinced her to take up viola. A woodcarver since childhood, Hutchins, at age 35, decided to make a viola. Hutchins then studied luthiery with Karl A. Berger (1949–59) and Stradivari expert Fernando Sacconi. While she and Harvard physicist Frederick A. Saunders performed more than 100 acoustical experiments (1949–63), Hutchins taught herself acoustical physics by making string instruments. In 1963 Hutchins and colleagues Robert Fryxell and John Schelleng founded the Catgut Acoustical Society. She published the CAS journal for more than 30 years, helping bridge the gap between violin makers and acoustical physicists. Hutchins made more than 500 instruments, authored more than 100 technical papers on violin acoustics, and edited ...


Howard Mayer Brown


Although it now has only the general meaning of ‘musical instrument’, the word ‘Instrument’ in German used to have the more specific meaning of ‘keyboard instrument’. To judge from the title-pages of late 16th-century German keyboard anthologies by Elias Nikolaus Ammerbach (1571, 1575 and 1583), Bernhard Schmid (1577) and others, ‘Instrument’ then meant ‘string keyboard instrument’ in opposition to organ; the volumes are said to be written in a tablature for ‘Orgel und Instrument’. This interpretation was confirmed by Praetorius, who wrote in Syntagma musicum, ii (2/1619), chap.37, that the Symphony – his collective name for harpsichord or clavicymbalum, virginal, spinet and the like – was generally called ‘Instrument’, a usage he criticized for its ambiguity. Like many other musical terms, however, the word meant various things at various times, and it was not always used consistently. In the 17th and 18th centuries, for example, ‘Instrument’ sometimes referred specifically to the clavichord. At least that conclusion seems warranted from the reference to ‘Instrument, Spinet oder Clavicymbel’ on the title-page of Benedict Schultheiss’s ...


Mark Lindley


When pitch can be intoned with a modicum of flexibility, the term ‘just intonation’ refers to the consistent use of harmonic intervals tuned so pure that they do not beat, and of melodic intervals derived from such an arrangement, including more than one size of whole tone. On normal keyboard instruments, however, the term refers to a system of tuning in which some 5ths (often including D–A or else G–D) are left distastefully smaller than pure in order that the other 5ths and most of the 3rds will not beat (it being impossible for all the concords on a normal keyboard instrument to be tuned pure; see Temperaments, §1). The defect of such an arrangement can be mitigated by the use of an elaborate keyboard.

In theory, each justly intoned interval is represented by a numerical ratio. The larger number in the ratio represents the greater string length on the traditional ...