Patent · US Active

Apparatus and a method for unwrapping phase differences

US10834505B2 · kind B2 · utility

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20Claims

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Assignee

Huawei Technologies Duesseldorf GmbH · DE

Inventors

Jürgen Geiger · Munich, DE
Kainan Chen · Munich, DE
Peter Grosche · Munich, DE

Key dates

Filing date	May 28, 2019
Grant date	Nov 10, 2020
Priority date	—
Expiry date	May 28, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04R29/005
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An apparatus configured to obtain a plurality of phase differences is provided. Each phase difference represents a difference in phase between a spectral component in a first sound signal and a corresponding spectral component in a second sound signal, to estimate an aliasing frequency. Phase differences in frequency bands above the aliasing frequency are expected to be wrapped, and to unwrap the plurality of phase differences in dependence on the estimated aliasing frequency. A phase difference obtained from spectral components that are comprised in one frequency band is unwrapped independently of any phase difference obtained from spectral components that are comprised in another frequency band.

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