51-60 of 57,885 results

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(a) double reed of an oboe, and (b) a bassoon; (c) free reed of a concertina

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(a) Earliest known trombone, a tenor in B♭ by Erasmus Schnitzer, Nuremberg, 1551 (Germanisches Nationalmuseum, Nuremberg); (b) Contrabass trombone in B♭ by G.N. Oller, Stockholm, 1639 (Musikhistoriska Museet, Stockholm); (c) bass trombone in E♭ (with tuning slide in bell joint) by Wolf Wilhelm Hass, Nuremberg, first half of the 18th century (Musikinstrumenten-Museum, Berlin)...

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(a) Elliptical stylus in a stereo groove with a sharp high-frequency modulation on one wall and a less severe waveform on the other; (b) pinch effect when hemispherical reproducing stylus travels in the varying groove formed by a plough-shaped cutting stylus

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(a) external tremulant; (b) internal tremulant

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(a) French violinist using the typical 17th-century breast position and thumb-under-hair grip: lithograph after a painting (1665) by Gerrit Dou; (b) Jascha Heifetz playing in a high position

Hulton Getty Picture Collection, London

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(a) Geometrical construction used to determine the plane of a reflector in (c) and (d); (b) paths of direct sound, and several reflected sound waves in a 19th-century concert hall with traditional horizontal floor and ceiling and parallel side walls (the diagram illustrates the different types of reflection which aid listening in a concert hall; after Beranek, 1962); (c) plan of the seating (shaded) and stage, showing the complexity of the calculations necessary to determine the wall reflectors of a small auditorium; (d) shape of the floor and ceiling of same, showing the calculation for the ceiling reflectors (after Bagenal and Wood, 1931)...

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(a) Helical horn, c1572 (Historisches Museum, Dresden); (b) triple-coil horn in F by William Bull, London, 1699 (Horniman Museum, London); (c) horn by George Henry Rodenbostel, London, late 18th century (City Museum and Art Gallery, Gloucester), shown with master crook and two couplers (mouthpiece missing)...

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(a) Kalapácsos kereplő (hammer-clapper) and (b) szélkereplő (wind-clapper)

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(a) Lace-tensioned kettledrums: woodcut from Mersenne’s ‘Harmonie universelle’ (1636–7); (b) screw-tensioned kettledrums: woodcut from Praetorius’s ‘Syntagma musicum’ (2/1619)

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(a) Lateral and (b) hill-and-dale movement of the stylus used in early stereophonic recording; (c), (d) movement of the stylus in the 45°/45° system of two-channel stereophonic recording