摘要 |
FIELD: physics.SUBSTANCE: device consists of two wedge-like transparent plates having different sound absorption coefficients, stacked on each other, a protective layer and a microphone. In the audio touch panel, the wedge for each plate is tapered on the diagonal, and the protective layer is stacked over the interlinked wedge-like plates. The microphone is mounted close to the end of the lower wedge-like plate.EFFECT: high accuracy of determining coordinates of the touch point of the finger of the user.2 dwg |