Method and apparatus for adjusting dynamic range and gain in an encoder/decoder for multidimensional sound fields
US5633981A · kind A · utility
173Cited by
26References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H20/91
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio encoder/decoder system suitable for digital motion picture film soundtracks provides for adjusting playback signal gain and dynamic range by modifying the scale factors of scaled spectral information. In one embodiment of a transform coding system, transform coefficients are expressed in floating-point form and adjustments are made by modifying the exponents in the floating-point representation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.