Aligning data streams
US7333865B1 · kind B1 · utility
2Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2006 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Jan 3, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/48
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention aligns two wide-bandwidth, high resolution data streams, in a manner that retains the full bandwidth of the data streams, by using magnitude-only spectrograms as inputs into the cross-correlation and sampling the cross-correlation at a coarse sampling rate that is the final alignment quantization period. The invention also enables selection of stable and distinctive audio segments for cross-correlation by evaluating the energy in local audio segments and the variance in energy among nearby audio segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.