Patent · US Active

Audio coding

US7716042B2 · kind B2 · utility

2Cited by

6References

14Claims

0Family size

Inventors

Gerald Schuller · Erfurt, DE
Stefan Wabnik · Ilmenau, DE
Jens Hirschfeld · Heringen, DE
Manfred Lutzky · Nuremberg, DE

Key dates

Filing date	Jul 27, 2006
Grant date	May 11, 2010
Priority date	—
Expiry date	Jan 22, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG10L19/265
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Coding an audio signal of a sequence of audio values into a coded signal includes determining first and second listening thresholds for first and second blocks of audio values of the sequence of audio values; calculating versions of first second parameterizations of the parameterizable filter such that the transfer function thereof roughly corresponds to the inverse of the magnitude of the first and second listening thresholds, respectively; filtering a predetermined block of audio values of the sequence of audio values with the parameterizable filter using a predetermined parameterization which depends on the version of the second parameterization to obtain a block of filtered audio values corresponding to the predetermined block which is quantized; forming a difference between the versions of the first and second parameterizations; integrating information on, inter alias, the difference into the coded signal.

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