Patent · US Active

MDCT M/S stereo

US11527252B2 · kind B2 · utility

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1References

18Claims

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Assignee

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

Inventors

Goran Markovic · Nuremberg, DE
Sascha Dick · Nuremberg, DE
Eleni FOTOPOULOU · Erlangen, DE
Stefan Bayer · Nuremberg, DE

Key dates

Filing date	Aug 28, 2020
Grant date	Dec 13, 2022
Priority date	—
Expiry date	Aug 28, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG10L19/22
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The invention refers to audio encoders, audio decoders, and audio encoding methods and audio decoding methods. In some examples, the invention refers to improved stereo coding. An encoder provides an encoded representation of an audio signal. The encoder applies a spectral whitening to a separate-channel representation of the input audio signal, to obtain a whitened separate-channel representation of the signal. The audio encoder applies a spectral whitening to a mid-side representation of the signal, to obtain a whitened mid-side representation of the signal. The audio encoder decides whether to encode the whitened separate-channel representation of the signal, to obtain the encoded representation of the signal, or to encode the whitened mid-side representation of the signal, to obtain the encoded representation of the signal.

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