Method and apparatus for tempo and downbeat detection and alteration of rhythm in a musical segment
US6316712A · kind A · utility
50Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1999 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Aug 20, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S84/12
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An apparatus and method for determining the tempo and locating the downbeats of music encoded by an audio track performs a cross-correlation between a click track and a pulse track to indicate tempo candidates and between the click track and a series of pulses to determine downbeat candidates. The rhythm of the track is modified by altering segments located between the beats before playback. Swing is added by lengthening and shortening certain segments and the time-signature is modified by deleting certain segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.