Method and apparatus for sensing, controlling and recording key motion in a keyboard musical instrument
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United States of America Patent
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Oct 29, 2002
Grant Date -
N/A
app pub date -
Jan 12, 2000
filing date -
Jan 12, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device and related method for detecting, controlling, and recording keyboard motion in which individual magnets, sensors and actuators associated with each key capture and re-produce key motion with a high degree of accuracy. The method uses a non-contact sensing assembly technique that requires no mechanical or electrical connections with the keyboard assembly, thus making the device easy to service and install. The method also uses a mathematical algorithm to adjust actuator key movement at a very rapid rate making it possible to install in a variety of pianos with different key weights and still be able to play with high accuracy. Finally, the device system dynamically maps the keyboard to which keys are in playback mode and which are in record mode, allowing the use of both modes simultaneously, thus letting the player add to (layer) performances.
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