HIERARCHICAL DECORRELATION OF MULTICHANNEL AUDIO

Title:

HIERARCHICAL DECORRELATION OF MULTICHANNEL AUDIO

Document Type and Number:

WIPO Patent Application WO/2014/062304

Kind Code:

A3

Abstract:

Provided are methods, systems, and apparatus for hierarchical decorrelation of multichannel audio. A hierarchical decorrelation algorithm is designed to adapt to possibly changing characteristics of an input signal, and also preserves the energy of the original signal. The algorithm is invertible in that the original signal can be retrieved if needed. Furthermore, the proposed algorithm decomposes the decorrelation process into multiple low-complexity steps. The contribution of these steps is generally in a decreasing order, and thus the complexity of the algorithm can be scaled.

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Inventors:

MINYUE LI (CN)
KLEIJN WILLEM BASTIAAN (NZ)
SKOGLUND JAN (US)

Application Number:

PCT/US2013/058365

Publication Date:

August 14, 2014

Filing Date:

September 06, 2013

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Assignee:

GOOGLE INC (US)

International Classes:

G10L19/008

Foreign References:

US7502743B2

2009-03-10

Other References:

DAI YANG ET AL: "High-fidelity multichannel audio coding with karhunen-loeve transform", IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 11, no. 4, 1 July 2003 (2003-07-01), pages 365 - 380, XP011099062, ISSN: 1063-6676, DOI: 10.1109/TSA.2003.814375

Attorney, Agent or Firm:

CHAD, Billings (STEWART KOLASCH & BIRCH, LLP,P.O. Box 74, Falls Church Virginia, US)

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