Audio signal processing based on object

A technology of audio signals and objects, applied in voice analysis, instruments, stereo systems, etc., can solve problems such as roughness

Active Publication Date: 2017-02-08
DOLBY LAB LICENSING CORP
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  • Audio signal processing based on object
  • Audio signal processing based on object
  • Audio signal processing based on object

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[0017] The principles of the exemplary embodiments disclosed herein will now be explained with reference to various exemplary embodiments shown in the drawings. It should be understood that the description of these embodiments is merely to enable those skilled in the art to better understand and further implement the exemplary embodiments disclosed herein, and is not intended to limit the scope in any way.

[0018] Object-based audio signals are used to be processed by systems capable of processing audio objects and their corresponding metadata. Information such as location, speed, width, etc. is provided within the metadata. These object-based audio signals are usually produced by mixers in the studio and are adapted to be rendered by different systems with appropriate processors. However, because the embodiments disclosed herein mainly focus on how to allocate objects into a reduced number of clusters while maintaining performance in terms of accuracy of spatial audio reproduc...

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Abstract

Embodiments of the invention relate to audio signal processing. An audio signal possesses a plurality of audio objects. The invention discloses a method of processing the audio signal. The method comprises the following steps of acquiring an object position aiming at each audio object; based on a set of the object position, a plurality of gains of objects to clusters and a measurement standard, determining cluster positions used for grouping the audio object into clusters, wherein the measurement standard indicates quality of the cluster positions and quality of the gains of objects to clusters; each cluster position in the cluster positions is a center of mass of a corresponding cluster; and one gain in the gains of objects to clusters defines a ratio of a corresponding audio object in one cluster. In the method, the set based on the object position, the cluster positions and the measurement standard is included and the gains of objects to clusters is determined; and based on the determined cluster positions and the gains of objects to clusters, a cluster signal is generated. The invention also discloses a corresponding system and a computer program product.

Description

technical field [0001] Example embodiments disclosed herein relate generally to object-based audio processing, and more particularly, to methods and systems for generating cluster signals from object-based audio signals. Background technique [0002] Traditionally, audio content in multi-channel formats (eg 5.1, 7.1, etc.) has been created by mixing different audio signals in a studio, or by simultaneously recording acoustic signals in a real environment. Recently, object-based audio content has become more and more popular because it carries several audio objects and audio beds individually, so that the audio content can be rendered with improved precision compared to traditional rendering methods . Audio objects refer to individual audio elements that may exist for a defined period of time, but also contain spatial information in the form of metadata describing each object's position, velocity and size (as an example). Audio beds or beds refer to audio channels intended ...

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Application Information

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IPC IPC(8): H04S3/00G10L19/008
Inventor 陈连武芦烈J·布里巴特
Owner DOLBY LAB LICENSING CORP
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