Generation of a signature of a musical audio signal
US10217469B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2014 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Dec 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/58
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention concerns a method for generating a signature of a musical audio signal of a given duration, the method comprising the following steps: —modelling (104) the musical audio signal to obtain, for each frequency band of a set of n frequency bands, a diagram representing the energy of the audio signal for the frequency band, on the basis of the time during said given duration; —determining (103) musical transition times tk of the audio signal during the given duration; —associating (105) each musical transition time tk with an item of local information comprising a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a subsequent musical transition time tk+1 and/or a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a preceding musical transition time tk−1; —determining (106), on the basis of the local information associated with each musical transition time tk, a key associated with the musical transition time, the determined keys forming a first set of keys of the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.