Jacob van Eyck
Jonkheer Jacob van Eyck was a Dutch nobleman, composer and blind musician. He was one of the best-known musicians of the Dutch Golden Age, working as a carillon player and technician, a recorder virtuoso, and a composer. He was an expert in bell casting and tuning, and taught Pieter and François Hemony how to tune a carillon. Van Eyck is credited with developing the modern carillon together with the brothers in 1644, when they cast the first tuned carillon in Zutphen. He is also known for his collection of 143 compositions for recorder, Der Fluyten Lust-hof, the largest work for a solo wind instrument in European history.
Biography
Early life
Jacob van Eyck was born in 1589 or 1590 into a noble family probably in The Hague and raised in the nearby town Bergen op Zoom. Born blind, he lived with his mother and father well into adulthood. Van Eyck moved to the town of Heusden and became involved as a player and technician of the town's carillon by 1618. He met with several craftsmen and the city organist to discuss changes and improvements to the carillon, which he carried out in 1620 and 1621.Carillon career
Van Eyck quickly established himself as a renowned carillon player and technician. In 1623 and 1624, he was employed by the city of Utrecht to repair and renovate the Dom Tower's clock and carillon. A year later, after negotiations with the city, he left home to become the city carillonneur. Over the years, he undertook projects to expand and improve the bell towers at the city hall, the Nicolaïkerk, and the Jacobikerk. His title was changed to "Director of the Bell-Works" in 1628, and he was entrusted with the technical supervision of all the bells of the city. He began instructing students to learn to play the carillon. In 1631, he had a small keyboard composed of 30 small bells constructed for instruction. A year later, he was appointed the carillonneur of Janskerk. Later in 1645, he accepted the same position at the Jacobikerk and the city hall.Campanology career
Van Eyck belonged to a circle of academics who met and corresponded regularly to exchange ideas. One of these was Marin Mersenne, who was the first to codify the harmonics of a vibrating spring. Van Eyck applied Mersenne's research to the acoustics of tuned bells. He devised methods for isolating the partials of a bell by whistling at the partials' resonant frequencies. Van Eyck showcased his discovery to mathematician René Descartes, who on 23 August 1638, wrote to Mersenne: "In Utrecht lives a blind man with a great musical reputation, who regularly plays bells. I have seen how he elicits 5 or 6 different sounds on each of the largest bells, without touching them, but only by coming close to their sound rim with his mouth..." In 1633, Van Eyck told Isaac Beeckman that the ideal series of a bell's partials consisted of three notes each an octave apart, supplemented by a minor third and perfect fifth in the second octave, and he convinced Beeckman to write about it in his journal on 24 September. The minor overtone series causes the characteristic melancholy sound of a well-tuned carillon.Not only could they be isolated, but Van Eyck asserted that they could be tuned harmoniously with each other by altering the shape of the bell itself. He claimed that it is not possible for a bell to be properly tuned upon casting, but instead that adjustments needed to be made to tune it. His assertion was put to the test in 1644. The city of Zutphen commissioned the famous bellfounding duo Pieter and François Hemony to cast a new carillon for its Wijnhuis tower. The city appointed Van Eyck as its consultant. He convinced the Hemony brothers to tune their carillon bells according to his research before finishing the job, rather than waiting for a negative review from the city. To achieve this, François cast the carillon bells slightly too thick so that they could be shaved down while tuning. Where other bellfounders haphazardly shaved the inside of a bell in an attempt to fix its tune, François placed them on a lathe rotated by five or six men to guarantee symmetry. He then shaved down the insides with a chisel to tune the five principal tones. Hemony carillons outfitted with "pure" tuned bells quickly became the standard and were coveted across Europe for decades. Van Eyck's acquaintance with the intellectuals of the time along with his longstanding relationship with bellfounders helps explain how he was able to influence the Hemony brothers.