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Dynamic equalization for cross-talk cancellation

A technology of crosstalk cancellation and dynamic equalization, which is used in speaker distribution signals, stereo systems, electrical components, etc.

Active Publication Date: 2019-10-11
DOLBY LAB LICENSING CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] When using a large number of objects simultaneously, for example in Dolby Atmos content, transferring and rendering the many elements can be challenging, especially on mobile devices running on battery power

Method used

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  • Dynamic equalization for cross-talk cancellation
  • Dynamic equalization for cross-talk cancellation
  • Dynamic equalization for cross-talk cancellation

Examples

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Embodiment Construction

[0056] The following description refers to certain implementations for the purpose of describing some of the innovative aspects of the disclosure and examples of contexts in which these innovative aspects may be practiced. However, the teachings herein can be applied in a variety of different ways. Furthermore, the described embodiments may be implemented in various hardware, software, firmware, etc. For example, aspects of the present application may be at least partially embodied in an apparatus, a system comprising more than one apparatus, a method, a computer program product, or the like. Accordingly, aspects of the present application may take the form of hardware embodiments, software embodiments (including firmware, resident software, microcode, etc.), and / or embodiments combining software and hardware aspects. Such embodiments may be referred to herein in various ways, eg, as "circuits," "modules," "stages," or "engines." Some aspects of the present application may t...

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Abstract

A first playback stream presentation intended for reproduction on a first audio reproduction system and transform parameters may be received and decoded. The second playback stream presentation may beintended for reproduction on headphones. The transform parameters may be applied to an intermediate playback stream presentation to obtain the second playback stream presentation. The intermediate playback stream presentation may be the first playback stream presentation, a downmix of the first playback stream presentation, or an upmix of the first playback stream presentation. A cross-talk- cancelled signal may be obtained by processing the second playback stream presentation with a cross-talk cancellation algorithm. The cross-talk-cancelled signal may be processed by a dynamic equalizationor gain stage wherein an amount of equalization or gain may be dependent on a level of the first playback stream presentation or the second playback stream presentation.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Patent Application No. 62 / 446,165, filed January 13, 2017, and the patent application entitled "DYNAMIC EQUALIZATION FOR CROSS-TALK CANCELLATION," filed November 30, 2017. Priority benefit of U.S. Provisional Patent Application No. 62 / 592,906, which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to the field of audio processing, including methods and systems for processing immersive audio content. Background technique [0004] The Dolby Atmos system provides an audio object format system. For example, in formats such as the Dolby Atmos format, immersive audio content may be composed of dynamic objects (e.g., object signals with time-varying metadata) and static objects, also referred to as composed of one or more A bed of named channels (for example, left front surround, center surround, rear top surround, etc.). T...

Claims

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Application Information

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IPC IPC(8): H04S7/00
CPCH04S7/302H04S7/305H04S7/307H04S2400/01H04S2400/03H04S2400/13H04S2420/01H04R3/14H04S3/008H04S7/303
Inventor D·J·布莱巴特A·J·西斐德
Owner DOLBY LAB LICENSING CORP
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