Frame-based audio transmission/storage with overlap to facilitate smooth crossfading
US7292902B2 · kind B2 · utility
37Cited by
14References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2003 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Jun 21, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2250/035
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods for splicing PCM audio frames form modified frames by appending to each frame either a portion of the next preceding frame or the next following frame. According to a first approach, splices are obtained by fading up and fading down a frame end and a frame appendage only at a splice point, and overlapping and combining to provide a crossfade at the splice. Alternatively, every frame end and frame appendage is faded up and faded down, overlapped and combined. A subtractive method of providing complementary fade-up and fade-down reduces rounding errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.