Fourier analyzer
Authors
Rudolph, Koenig, Rudolph Koenig, Inventor
Date(s)
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The Fourier analyzer, which was called by Rudolph Koenig an “Analyzer of the timbre of sounds”, is a large device (about 36 inches tall) for simultaneously observing several components of a sound.

Each of fourteen adjustable Helmholtz resonators of varying sizes can be connected via rubber tubing to one of eight manometric flames, the light from which is viewed through a hand-driven rotating mirror (see fig. 2). The resonators can be individually adjusted to select desired frequencies.

The device was used mainly for demonstration purposes. It could be considered a primitive form of a “multi-channel analyzer”.
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Resonator
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