Automatic performance control apparatus
US5585584A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 1996 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | May 6, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2220/391
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An automatic performance control apparatus provides a hand controller which contains gyro sensors in X, Y directions. The gyro sensors are employed to accurately detect hand-swing motion applied to the hand controller without being affected by gravity. When the hand controller is swung by a human operator like a conductor's baton, angular velocity applied to the hand controller is detected based on detection values of the gyro sensors. The angular velocity becomes bottom at a change point of direction in a locus of the hand-swing motion of the hand controller; and a peak of the angular velocity appears between bottoms. So, peak detection process is performed on the angular velocity to determine a beat timing designated by the human operator. If the peak is detected, beat-timing detection data are automatically created and are transmitted to an electronic musical instrument having an automatic performance function. Based on the beat-timing detection data, the electronic musical instrument performs tempo control during progression of automatic performance in real time. Moreover, beat-number determination process is performed to make a decision as to which of beats in triple time corr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.