Method and system for reduction of quantization-induced block-discontinuities and general purpose audio codec
US8010371B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2008 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Apr 26, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2019/0012
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are provided for ultra-low latency compression. In accordance with one implementation, a method is provided that includes formatting, by a processor, an input audio signal into a plurality of overlapping time-domain blocks, transforming, by a processor, each time-domain block to a transform domain block comprising a plurality of coefficients, and partitioning the coefficients of each transform domain block into signal coefficients and residue coefficients. The method also includes quantizing the signal coefficients for each transform domain block and generating signal quantization indices indicative of such quantization, modeling the residue coefficients for each transform domain block as stochastic noise and generating residue quantization indices indicative of such quantization, and formatting the signal quantization indices and the residue quantization indices for each transform domain block as an output bit stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.