Computational music-tempo estimation
US7645929B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2006 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Sep 11, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2210/076
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Various method and system embodiments of the present invention are directed to computational estimation of a tempo for a digitally encoded musical selection. In certain embodiments of the present invention, described below, a short portion of a musical selection is analyzed to determine the tempo of the musical selection. The digitally encoded musical selection sample is computationally transformed to produce a power spectrum corresponding to the sample, in turn transformed to produce a two-dimensional strength-of-onset matrix. The two-dimensional strength-of-onset matrix is then transformed into a set of strength-of-onset/time functions for each of a corresponding set of frequency bands. The strength-of-onset/time functions are then analyzed to find a most reliable onset interval that is transformed into an estimated tempo returned by the analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.