Encoding apparatus for processing an input signal and decoding apparatus for processing an encoded signal

Tom Bäckström (Inventor), Florin Ghido (Inventor), Johannes Fischer (Inventor)

Research output: Patent

Abstract

Disclosed is an apparatus for processing an input signal, having a perceptual weighter and a quantizer. The perceptual weighter has a model provider and a model applicator. The model provider provides a perceptual weighted model based on the input signal. The model applicator provides a perceptually weighted spectrum by applying the perceptual weighted model to a spectrum based on the input signal. The quantizer is configured to quantize the perceptually weighted spectrum and for providing a bitstream. The quantizer has a random matrix applicator and a sign function calculator. The random matrix applicator is configured for applying a random matrix to the perceptually weighted spectrum in order to provide a transformed spectrum. The sign function calculator is configured for calculating a sign function of components of the transformed spectrum in order to provide the bitstream. The invention further refers to an apparatus for processing an encoded signal and to corresponding methods.
Original languageEnglish
Patent numberUS2017270941
IPCG10L 19/ 038 A I
Filing date21/09/2016
Publication statusPublished - 2017
MoE publication typeH1 Granted patent

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