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Virtual rendering of object-based audio

An object and audio technology, applied in the field of virtual rendering and equalization, can solve the problem of high dependence on the effect of audio rendering processor in virtual space

Active Publication Date: 2016-11-09
DOLBY LAB LICENSING CORP
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0027] A disadvantage of virtual spatial audio rendering processors is that the effect is highly dependent on the optimal position of the listener sitting relative to the speakers assumed in the crosstalk canceller's design

Method used

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  • Virtual rendering of object-based audio
  • Virtual rendering of object-based audio
  • Virtual rendering of object-based audio

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Embodiment Construction

[0044]Systems and methods for virtually rendering object-based audio through multiple pairs of speakers and improving equalization schemes for such virtual rendering are described, although the application is not so limited. Aspects of one or more embodiments described herein may be implemented in an audio or audio-visual system that performs audio mixing, rendering, and playback of audio or video audio, including one or more computers or processing devices executing software instructions. source audio information in the system for processing. Any of the described embodiments may be used alone, or in any combination with each other. While various embodiments may be motivated by overcoming various deficiencies of the prior art that may be discussed or alluded to in one or more places in this specification, embodiments do not necessarily address any of these deficiencies. In other words, different embodiments may address different deficiencies that may be discussed in this spec...

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Abstract

A system for virtually rendering object-based audio by binaurally rendering each object and then translating the resulting stereo binaural signals between multiple crosstalk cancellation circuits feeding corresponding multiple speaker pairs is described. Example. Compared to prior art virtual rendering with a single pair of speakers, the described embodiments improve the listener's impression of space both inside and outside the sweet spot of the crosstalk canceller. An improved equalization technique for the crosstalk canceller is also described, calculated from both the crosstalk canceller filter and the binaural filter and applied to the monophonic audio signal being virtualized. The described technique improves timbre for listeners outside the sweet spot and results in less timbre shift when switching from standard to virtual rendering.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Priority Application No. 61 / 695,944, filed August 31, 2013, which is hereby incorporated by reference in its entirety. technical field [0003] One or more implementations relate generally to audio signal processing, and more specifically, to object-based virtual rendering and equalization of audio. Background technique [0004] The subject matter discussed in the Background section should not be assumed to be prior art merely because it is mentioned in the Background section. Similarly, issues mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which may themselves be inventions. [0005] Virtual rendering of spatial audio through a speaker pair typically involv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04S7/00H04R5/02H04S3/00
CPCH04R5/02H04S3/002H04S7/307H04S2420/01H04R3/002H04S7/30
Inventor A·J·西费尔特
Owner DOLBY LAB LICENSING CORP
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