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Audio object extraction

An object extraction, audio technology, used in speech analysis, stereo systems, instruments, etc.

Active Publication Date: 2016-08-17
DOLBY LAB LICENSING CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently there is no solution that can accurately and efficiently extract audio objects from existing channel-based audio content

Method used

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  • Audio object extraction
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Embodiment Construction

[0022] The principles of the invention will be described below with reference to several example embodiments shown in the accompanying drawings. It should be understood that these embodiments are described only to enable those skilled in the art to better understand and implement the present invention, but not to limit the scope of the present invention in any way.

[0023] As mentioned above, it is desirable to extract audio objects from audio objects in conventional channel-based formats. To do this, a number of issues need to be considered, including but not limited to:

[0024] ●Audio objects may be static or moving. For a static audio object, although its position is fixed, it may appear anywhere in the sound field. For a moving audio object, it is difficult to predict its arbitrary trajectory simply based on some predefined rules.

[0025] ● Audio objects may coexist. Multiple audio objects may coexist with slight overlap in some channels, or heavily overlap (or mix)...

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PUM

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Abstract

Embodiments of the present invention relate to audio object extraction. A method for audio object extraction from audio content of a format based on a plurality of channels is disclosed. The method comprises applying audio object extraction on individual frames of the audio content at least partially based on frequency spectral similarities among the plurality of channels. The method further comprises performing audio object composition across the frames of the audio content, based on the audio object extraction on the individual frames, to generate a track of at least one audio object. Corresponding system and computer program product are also disclosed.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Chinese Patent Application No. 201310629972.2 filed on November 29, 2013, and U.S. Provisional Patent Application No. 61 / 914129 filed on December 10, 2013, the entire contents of which are hereby incorporated by reference enter here. technical field [0003] The present invention relates generally to audio content processing, and more particularly to methods and systems for audio object extraction. Background technique [0004] Traditionally, audio content is created and stored in a channel based format. The term "audio channel" or "channel" as used herein is just audio content that typically has a predefined physical location. For example, stereo, surround 5.1, surround 7.1, etc. are all channel-based formats for audio content. Recently, with the development of the multimedia industry, three-dimensional (3D) movies and television contents have become more and more popular in both...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/008
CPCG10L19/008G10L19/02G10L19/038H04S3/008H04S2400/11
Inventor 胡明清芦烈王珺
Owner DOLBY LAB LICENSING CORP