| 摘要 |
A controller with two degrees of freedom and a coordinate display contains an operating lever fitted in a linkage which can be moved from a position within a defined cone and operates position transducers. The controller employs two circular link motions with mutually perpendicular axes. The controller is suitable for use in sound reproduction, in partic. In quadrophonics, and provides display precision. One apex of a parallelogram contains a linkage to the control lever, and both arms connected to the apex contain moving elements connected to levers whose other ends move on a fixed common axis perpendicular to the parallelogram plane. The opposite apex is connected to the display indicator. |
