Nonlinear overlap method for time scaling
US7173986B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2003 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Sep 29, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A nonlinear overlap method for time scaling to synthesize an S1[n] and an S2[n] into an S3[n] is disclosed. The S1[n] and the S2[n] having N1 and N2 signals respectively. The nonlinear overlap method includes the following steps: (a) delaying the S2[n] by a predetermined number and forming an S5[n], (b) establishing a correlogram of a cross-correlation function of the S1[n] and S5[n], and (c) setting S3[n] as a number of S1[n] when 0<=n<; as a number formed by overlap-adding the S1[n] and an S4[n] in a weighting manner when (the predetermined number+the maximum index+the first threshold)<=n<(N1−a second threshold); and as a number of S4 wherein the first and second thresholds are not equal to zero at the same time, and the S4[n] is formed by delaying the S5[n] by the maximum index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.