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Article

Mark Hoffman

(b Hanau, June 20, 1839; d Hanau, Jan 13, 1900). German acoustician, son of Georg Appunn. At the Leipzig Conservatory he continued the acoustical experiments of his father, especially the determination of vibration ratios of very high tones by optical means, and constructed fine acoustic apparatus. He devised a new shape for the glockenspiel, with right-angled metal rods in a circular arrangement and a metal half-sphere above as a resonator....

Article

(b Hanau, Sept 1, 1816; d Hanau, Jan 14, 1888). German musical theorist and acoustician. He studied theory with Anton André and Schnyder von Wartensee, the piano with Suppus and Alois Schmitt, the organ with Rinck and the cello with Mangold. He became a well-rounded musician who could play almost every instrument. Until ...

Article

Murray Campbell

(Graham)

(b Portland, OR, April 29, 1911; d Los Angeles, Oct 28, 1988). American acoustician. After studying at Reed College, Portland (BA 1932), he undertook postgraduate study at the University of California in Berkeley (MA 1936, PhD 1940). His early research work was in nuclear physics, working under the supervision of Ernest Lawrence in the Radiation Laboratory at Berkeley. In 1945 he was appointed professor of physics at the University of Southern California, and he continued in that post until his retirement in 1980. An accomplished performer on the piano and the bassoon, Backus was awarded the degree of MMus in conducting by the University of Southern California in 1959. In the later stages of his research career he made major contributions to the study of the acoustics of woodwind instruments, brass instruments and organ pipes. In 1969 the first edition of The Acoustical Foundations of Music...

Article

Jon Newsom

(b Chambersburg, PA, March 31, 1897; d Homestead, PA, Jan 4, 1970). American acoustician, musicologist and composer. He taught himself the piano and the organ and studied at Dickinson College, Pennsylvania (1914–18); after graduating he worked as organist and mathematics teacher at the Haverford School in Pennsylvania (1919–21, 1922–6) while continuing his studies at Dickinson College (MA 1920) and Temple University (MusB 1924). He subsequently taught music theory as assistant professor at Wells College, New York (1926–9), leaving with a fellowship to the universities of Cologne and Berlin. After studies at Cornell University under Kinkeldey (1931–2) he gained the doctorate in 1932 with a dissertation on the history of equal temperament from Ramis de Pareia to Rameau. He taught at Ithaca College, New York (1932–9), while working for the MusD of the University of Toronto (...

Article

R.W.B. Stephens

revised by Clive Greated

(b Budapest, June 3, 1899; d Cambridge, MA, June 13, 1972). Hungarian acoustician. He studied at the universities of Berne and Budapest, where he took the PhD (1923). He taught at the University of Budapest until 1947, and was engaged in research with the Hungarian telephone service concerning the mechanical behaviour of the ear, work which led to a revision of the theory of hearing. He later worked on physiological acoustics at Harvard University, and is the only acoustician to have obtained a Nobel Prize. Békésy studied the acoustics of the ear, sometimes by direct microscopic observation through tiny holes bored into the bony wall of the cochlea. He made fundamental discoveries about the operation of the inner ear and the way in which it responds to complex sounds; these discoveries are described with great lucidity in his book Experiments in Hearing (New York, 1960)....

Article

Murray Campbell

(Henry)

(b Chicago, Jan 2, 1925; d Cleveland, Aug 4, 1987). American acoustician. His parents being missionaries, he spent much of his childhood in Lahore. After returning to the USA to study at Washington University, St Louis (AB 1948, PhD 1952), Benade was appointed in 1952 to the physics faculty at Case Institute of Technology, Cleveland, which later became Case Western Reserve University. Promoted to a full professorship in 1969, he continued in that post until shortly before his death. A skilled woodwind player, he had an exceptional ability to relate the results of acoustical research to the practical requirements of musicians and musical instrument makers. Benade established a research programme which made many fundamental contributions to the understanding of the operation of wind instruments. Also active in string instrument research, he was a founding member of the Catgut Acoustical Society and its president between 1969 and 1972...

Article

Murray Campbell

(Leroy)

(b Solon, IA, Sept 15, 1914). American acoustician. He gained his BS after studying at Cornell College, Iowa, and subsequently gained his doctorate under the supervision of F.V. Hunt. During the Second World War Beranek worked in the Cruft Acoustics Laboratory at Harvard University and later at the MIT. In 1948 he founded a company of acoustics consultants (Bolt, Beranek and Newman, Inc.) which quickly established an international reputation. Before writing his seminal book, Music, Acoustics and Architecture (1962), he travelled through 20 countries, listening and making measurements in many halls and consulting many acousticians. This preparation preceded the final designing of the Metropolitan Opera House, New York, for which he and his firm held the acoustic consultancy. Beranek has been responsible for the acoustical design of many major concert halls, and through his writings has contributed greatly to the dissemination of good practice in the design and construction of buildings intended for musical use. He was president of the Acoustical Society of America (...

Article

Malcolm Turner

(b Bautzen, June 18, 1870; d Bautzen, Jan 4, 1941). German acoustician. After studying at the Dresden Conservatory he became Stadtkantor at Bautzen from 1898 to 1914 (from 1908 with the title of director of church music), where he organized music festivals in 1905, 1907 and 1912. He then went on to study acoustics, especially the acoustics of bells, in which field he was a pioneer, at the Technische Hochschule, Dresden. From 1916 he taught acoustics at the Technische Hochschule, Berlin, becoming professor in 1922. Meanwhile in 1918 he took up a lectureship in church music at the University of Berlin, and in 1920 became adviser on church bells and organs to the Prussian Ministry of Culture. In 1927 he set up the Institut Biehle, under the auspices of the University and the Technische Hochschule, Berlin, for the study of church buildings, organs, bells and acoustics. Further information is given in E.M. Müller, ed.: ...

Article

E.D. Mackerness

(b London, July 13, 1846; d London, Dec 29, 1936). English acoustician. He was principally noted for his design and manufacture of wind instruments. He had a long career with the firm of Boosey & Hawkes and when Boosey’s took over the business of Henry Distin in 1868, Blaikley was appointed works manager. He became widely known as an authority on woodwind and brass, and in 1874 devised a system of compensating pistons (patented in 1878) which Boosey & Co. adopted (see Valve). The firm continued to use equipment designed by him until the late 1980s. Blaikley also devised other improvements for trumpets, horns and trombones. In 1875 he joined the (Royal) Musical Association and in 1878 read the first of many papers to that society. This highly technical discussion of resonance was followed by others on such subjects as quality of tone in wind instruments (...

Article

Murray Campbell

(Pierre Maxime)

(b Paris, Nov 16, 1866; d Toulouse, Nov 15, 1953). French physicist and acoustician. He studied physics at the Sorbonne (1883) and at the Ecole Normale Supérieure (1885–8). After teaching at the Collège de France and the Lycée at Agen, in 1892 Bouasse joined the staff of the University of Toulouse and obtained his doctorate in mathematics. In 1897 he gained the degree of doctorate in physical sciences and was appointed to the physics chair at Toulouse, where he remained for the rest of his academic career. Retiring in 1937, he continued to work in his laboratory until two years before his death. His research interests ranged widely and he made many discoveries of great importance to musical acoustics. In particular, his studies of woodwind and brass instruments provided the essential foundation for the modern understanding of how sound is generated in these instruments. Bouasse's work has been unjustly neglected outside France, partly because he published little in conventional journals. Instead, he wove his own theories and experiments into a 45-volume library of textbooks on classical physics, the ...

Article

Murray Campbell

(Michael)

(b London, August 26, 1933). English physicist and acoustician. He obtained a BSc in physics from Imperial College, London, later gaining the doctorate there with research into high-amplitude stress waves. After holding a research fellowship at the electronic music laboratory of the Canadian National Research Council in Ottawa, he worked for five years in the acoustics section of the UK National Physical Laboratory, where he carried out research on the psycho-acoustic perception of short duration and very low frequency sounds. In 1966 he was appointed to a lectureship in acoustics at the University of Surrey, where, in collaboration with colleagues in the US, Europe, Israel and Australia, he established a group which became noted for its research into the acoustics of wind instruments and their subjective assessment. He played a major part in the establishment there of the Tonmeister course in music and applied physics. An accomplished trombonist, his most notable research has been in the acoustics of brass instruments, where he supplemented and elucidated physical measurements by applying psychological testing procedures to the assessment of brass instrument tone quality. He developed a non-invasive technique which allows the bore of an instrument to be reconstructed by injecting acoustic pulses into one end and recording the reflections....

Article

C. Truesdell

revised by Clive Greated

(Florenz Friedrich)

(b Wittenberg, Nov 30, 1756; d Breslau [now Wrocław], April 3, 1827). German acoustician. He studied law at Leipzig University before turning to scientific studies. He invented two instruments, the ‘euphon’ and the ‘klavizylinder’, both of which were variants of the glass harmonica. However, he owes his fame to his celebrated experiments on the nodal patterns and corresponding frequencies of vibration plates. He showed that the vibration patterns, often called Chladni figures, could be made visible by sprinkling sand on the plate. The sand is thrown up on vibrating areas and collects around nodal lines. Chladni travelled through Europe playing on his instruments and demonstrating his experiments before many persons and institutions; he encountered Goethe, Lichtenberg, Olbers, Laplace, Napoleon and other notable men of the period. Chladni's experiments stimulated much early work on the vibration of plates and bars and indeed so impressed the Académie des Sciences, Paris, that it offered a prize for a successful explanation of his sand figures and the motion of elastic surfaces in general. His work helped to form the foundation of modern theories, capable of predicting precise vibration patterns for violin and guitar top plates and the soundboards of keyboard instruments....

Article

Clive Greated

(b Cleveland, July 19, 1915). American physicist and acoustician. After studying physics at the Case School of Applied Science (BS 1937) he obtained the PhD from the University of Illinois. From 1941 to 1980 he held various research and management positions at the Westinghouse Corp. His research into the acoustics of the flute, carried out in a small laboratory at his home, has contributed significantly to what is known today about the behaviour of flutes and organ pipes. Several of his papers are recognised as standard reference material. His theory of feedback and how this relates to the means by which the flautist produces the desired frequencies and loudness is particularly relevant to performance. He also studied the significance of mouth resonance and the effect of mode stretching on harmonic generation. His work on the intonation of both antique and modern flutes and his critical assessment of Theobald Boehm's methods have helped in shaping current views on the historical development of the instrument....

Article

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....

Article

Murray Campbell

(Winfried)

(b Munich, Aug 16, 1905; d Miesbach, Oct 16, 1990). German acoustician. He studied mechanical and electrical engineering at the Technical University of Berlin, gaining his doctorate in 1932 for a thesis on sound absorption by porous surfaces. Cremer subsequently engaged in acoustical research at the Technical University and the Heinrich Hertz Institute in Berlin. In 1945 he obtained a teaching post at the University of Munich, and in 1946 established an acoustical consultancy firm in Munich. He was appointed director of the Institut für Technische Akustik at the Technical University in 1954 and of the acoustics division of the Heinrich Hertz Institute in 1955. Retiring in 1973, he remained active in teaching and research until his death. Cremer made many important contributions to the solution of practical problems in noise control and building acoustics. He was acoustics consultant for a number of major halls including the Berlin Philharmonie, the Sydney Opera House and the Madrid Concert Hall. A skilled amateur pianist and violinist, in the 1930s he was an enthusiastic exponent of the trautonium, an early electronic instrument. Cremer later became interested in violin acoustics and was one of the leading figures in the Catgut Acoustical Society. His book ...

Article

Sue Carole DeVale

(b Newton, MA, Nov 14, 1850; d Forest Glen, MD, May 31, 1930). American ethnologist. He studied biology at Harvard (AB 1875, PhD 1877), and later studied at Leipzig and the University of Arizona. He was field director of the Hemenway Southwestern Archaeological Expedition (1889–94), and, commissioned by Mary Hemenway, tested the value of the phonograph for fieldwork in March 1890 by recording songs of the Passamaquoddy Indians in Maine. These were soon followed by his Zuni (1890) and Hopi Pueblo (1891) recordings which were then analysed by Benjamin Ives Gilman. He was responsible for the Hemenway Exhibition at the Madrid exhibition of 1892 commemorating Columbus's discovery of America, and consequently received many honours. As a result of his work in Madrid, Hemenway later commissioned recordings by Gilman. From 1895 to 1918 Fewkes worked as an ethnologist at the Bureau of American Ethnology in Washington, DC, becoming chief in ...

Article

Sue Carole DeVale

(b Cuba, March 15, 1838; d Washington DC, April 6, 1923). American ethnologist. She devoted herself to the study of the Great Plains Indians, so completely winning their confidence that she was privileged to gather data and record ceremonials and rituals not usually witnessed by non-Indians. While living on the Omaha reservation in 1881, she became interested in the education of the 24-year-old son, Francis, of Chief Joseph La Flesche. She took him to Washington where he lived with her, as her ‘son by adoption’, until 1910; with him, Fletcher wrote an important monograph on the Omaha tribe (1911).

Fletcher, who was an assistant at the Peabody Museum of American Archaeology and Ethnology from 1882, began collecting ethnological and musical data in 1883 among the Omaha and Dakota Indians. She also wrote about other tribes and kinship groups and transcribed hundreds of songs including the first complete record of the Pawnees’ Hako ceremony. Initially she notated melodies by ear, having her informants repeat each song until she was satisfied that she had an accurate transcription. Soon after the pioneer field use of the Edison phonograph by Jesse Walter Fewkes in ...

Article

Murray Campbell

(b Provo, UT, Sept 11, 1884; d Provo, July 23, 1981). American acoustician. He studied at Brigham Young University in Provo (BS 1907), then at the University of Chicago, where he gained his doctorate in 1911 for research into the charge of the electron. In 1916 he joined the staff of Bell Telephone Laboratories in New York; he remained there for 33 years, becoming director of acoustical research in 1928 and of physical research in 1935. In 1949 Fletcher was appointed professor of electrical engineering at Columbia University, and in 1952 he returned to Brigham Young University as director of research. He became professor emeritus in 1974, and continued his research activity until his death. Fletcher was one of the great pioneers of the science of psychoacoustics, and his work on the human perception of sound was of fundamental importance. Responsible for the first public demonstration of stereophonic sound reproduction in ...

Article

Murray Campbell and Clive Greated

(Horner)

(b Armidale, NSW, July 14, 1930). Australian physicist and acoustician. He studied at Sydney University (BSc 1951) and Harvard (PhD 1956); after a period working in industry and with the Commonwealth Scientific and Industrial Research Organisation (CSIRO) Radiophysics Laboratory, he was appointed in 1963 to a chair in physics at the University of New England, NSW. In 1983 he became director of the CSIRO Institute of Physical Sciences and in 1988 visiting fellow at the Australian National University. He studied the flute with Victor McMahon in Sydney and James Pappoutsakis in Boston. Most notable in Fletcher’s extensively published research is his work with Suzanne Thwaites on sound generation in flutes and organ pipes, on flute performance techniques and on reed and lip-valve generators in woodwind and brass instruments. He also studied the vibration characteristics of gongs and cymbals, and with the composer Moya Henderson invented the alemba, a keyboard percussion instrument of tuned triangles. He is best known as co-author of the influential ...

Article

Rudolf A. Rasch

(b Buitenzorg [now Bogor], Java, Aug 17, 1887; d Beekbergen, Sept 24, 1972). Dutch physicist and acoustician. He took the doctorate in physics in 1913 at the University of Leiden, and studied with Einstein in Zürich, Rutherford in Manchester and Bragg in Leeds. He taught physics at Delft Gymnasium (1921–3) and Technical College (1923–7), and was Lorentz's assistant (1927) and director of the physics section (1928–55) at Teyler’s Stichting, Haarlem, concurrently occupying the chair founded by this institute at Leiden (1928–55). During these years Fokker became one of the foremost physicists in the Netherlands, and with the suspension of academic activity under the German occupation he turned to problems of musical aesthetics, his chief interests being the theories of Euler and Christiaan Huygens. He constructed two pipe organs, one (1943) with just intonation scales according to the principles of Euler’s ...