Patent · US Active

Linear prediction based coding scheme using spectral domain noise shaping

US9595262B2 · kind B2 · utility

13Cited by

57References

13Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Goran Markovic · Nuremberg, DE
Guillaume Fuchs · Erlangen, DE
Nikolaus Rettelbach · Nuremberg, DE
Christian Helmrich · Erlangen, DE
Benjamin Schubert · Nuremberg, DE

Key dates

Filing date	Aug 14, 2013
Grant date	Mar 14, 2017
Priority date	—
Expiry date	Oct 26, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG10L25/06
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An encoding concept which is linear prediction based and uses spectral domain noise shaping is rendered less complex at a comparable coding efficiency in terms of, for example, rate/distortion ratio, by using the spectral decomposition of the audio input signal into a spectrogram having a sequence of spectra for both linear prediction coefficient computation as well as spectral domain shaping based on the linear prediction coefficients. The coding efficiency may remain even if such a lapped transform is used for the spectral decomposition which causes aliasing and necessitates time aliasing cancellation such as critically sampled lapped transforms such as an MDCT.

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