| 摘要 |
Device for the manual playing of electronic musical instruments. Each manual has three groups of keys respectively arranged along three tilting bars, for operation by three fingers on one hand of the player. When a key is pressed at one end, it tilts the bar on which it is mounted in one direction, and one tone is produced. If the same key is pressed at the opposite end, it tilts the bar in the opposite direction, and a different tone is produced. Special control keys or action converters include a roll positioned so that it may be operated by the thumb of the same hand which is playing the keys. Rotation of the roll by the thumb produces one control signal affecting the sound issuing from the instrument, and axial motion of the roll by the thumb produces a different control signal. Other refinements and improvements are disclosed.
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