Patent · US Active

Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill element

US10553232B2 · kind B2 · utility

7Cited by

8References

15Claims

0Family size

Assignee

Dolby International AB · IE

Inventors

Lars Villemoes · Stockholm, SE
Heiko Purnhagen · Sundbyberg, SE
Per Ekstrand · Saltsjöbaden, SE

Key dates

Filing date	Jul 19, 2018
Grant date	Feb 4, 2020
Priority date	—
Expiry date	Jul 19, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG10L21/038
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Embodiments relate to an audio processing unit that includes a bitstream payload deformatter and a decoding subsystem. The decoding subsystem is coupled to the bitstream payload deformatter and configured to decode at least a portion of a block of an encoded audio bitstream. The block includes a fill element with an identifier indicating a start of the fill element and fill data after the identifier. The fill data includes at least one flag identifying whether a base form of spectral band replication or an enhanced form of spectral band replication is to be performed on audio content of the block. The identifier is a three bit unsigned integer transmitted most significant bit first and having a value of 0x6.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.