Method and system for parametric characterization of transient audio signals
US7363216B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2003 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Oct 1, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/025
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of parametrically encoding a transient audio signal, including the steps of: determining a set V of the N largest frequency components of the transient audio signal, where N is a predetermined number; determining an approximate envelope of the transient audio signal; and determining a predetermined number P of samples W of the approximate envelope for use in generating a spline approximation of the approximate envelope, whereby a parametric representation of the transient audio signal is given by parameters including V, N, P and W, such that a decoder receiving the parametric representation can reproduce a received approximation of the transient audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.