When was the boehm system invented

This large-holed instrument could produce greater volume of tone than other instruments, and Boehm set out to produce his own large-holed design. In addition to large holes, Boehm provided his flute with "full venting", by which is meant that keys which previously had been normally closed opening only when the key was operated were converted to normally open keys. Another premise behind the Boehm system was that the tone holes should be located at acoustically optimum points on the body of the instrument, rather than where they can conveniently be covered by the player's fingers.

To achieve these goals, Boehm adapted a system of axle mounted keys with a series of "open rings" called "brille", German for "eyeglasses", as they resembled the type of eyeglass frames common during the nineteenth century that were fit around other tone holes, such that the closure of one tone hole by a finger would also close a key placed over a second hole.

In Boehm introduced his new conical-bore flute, which achieved a fair degree of success. Boehm, however, continued to look for ways to improve the instrument. Finding that an increased volume of air produced a stronger and clearer tone, he replaced the conical bore with a cylindrical bore.

To improve the low register , he found that a parabolic contraction of the bore at the mouth hole was needed. For optimum tone he found that the tone holes should be large enough that they cannot be covered by the fingertips, and so a system of finger plates became necessary. From just two keys to 16 The clarinet is said to have been invented by Johann Denner around the turn of the eighteenth century.

What is a Boehm clarinet? From C up to high G [Experiment]comparing the clarinet and the recorder. How the Instrument is Made How is a clarinet designed? Making the Body Making the key components Assembly and finishing An instrument created from human craftsmanship and the bounty of nature. Choosing an Instrument Criteria for choosing a clarinet How to choose a reed.

Until Boehm built and performed on eight-keyed flutes. But on a visit to London he met others interested in devising new acoustical models for the flute that used mechanical means to alter its fingering.

He quickly devised the model shown below, which used interlinked rod-axles to transmit the motion of fingers to remote tone holes.

This allowed him to break out of the acoustical framework imposed by the flute's traditional design.