Embodiments with various kinds of acoustic or optical pickups are also disclosed. In one embodiment there is a further processing of each hydrophone signal. īlocking water from coming out of a given hole produces a given note, which, in some embodiments, is electrically amplified by a hydrophone. Some hydraulophones have reeds (one or more reed for each finger hole) and some are reedless, having one or more fipple mechanism associated with each finger hole, thus having no moving parts to wear out.īlocking flow through a finger hole directs the water instead to one or more of the above-described sound-production mechanisms, or resulting changes in flow or pressure affect a separate sounding mechanism associated with each finger hole. A single disk, shaft, or valve assembly can have rings or passages with different numbers of holes for different notes. Those described in Mann's paper Hydraulophone design considerations use water jets striking perforated spinning disks, shafts, or valves, to create a pulsating water flow, similar to a siren disk. They have a user interface, which is blocking water jets to produce sound. Hydraulophones use water-flow sound-producing mechanisms.
The term may be applied based on the interface used to play the instrument, in which a player blocks the flow of water through a particular hole in order to sound a particular note, or based on a hydraulic sound production mechanism.
Waterflute (reedless) hydraulophone with 45 finger-embouchure holes, allowing an intricate but polyphonic embouchure-like control by inserting one finger into each of several of the instrument's 45 mouths at once
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