Digital audio coding apparatus, method and computer readable medium
US6772111B2 · kind B2 · utility
8Cited by
2References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 2001 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Feb 18, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A digital audio coding apparatus includes a part which converts a frame of digital audio data into a frequency domain; a part which divides the digital audio data into a plurality of bands; a part which calculates an allowed distortion level by using an absolute hearing threshold for each divided band and assigns coding bits; a change part which changes the absolute hearing threshold adaptively on the basis of intensity distribution of the digital audio data in the frequency domain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.