Aligning data streams
US6993399B1 · kind B1 · utility
9Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2002 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Jan 4, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8547
- WIPO fieldAudio-visual 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.