Method and device for generating an identifier for an audio signal, method and device for building an instrument database and method and device for determining the type of an instrument
US7214870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2002 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Nov 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2240/145
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
In a method for generating an identifier for an audio signal including a tone generated by an instrument, a discrete amplitude-time representation of the audio signal is generated at first, wherein the amplitude-time representation, for a plurality of subsequent points in time, comprises a plurality of subsequent amplitude values, wherein a point in time is associated to each amplitude value. Subsequently, an identifier for the audio signal is extracted from the amplitude-time representation. An instrument database is formed from several identifiers for several audio signals including tones of several instruments. By means of a test identifier for an audio signal having been produced by an unknown instrument, the type of the test instrument is determined using the instrument database. A precise instrument identification can be obtained by using the amplitude-time representation of a tone produced by an instrument for identifying a musical instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.