18460861. Method and Apparatus for Obtaining a Higher-Order Ambisonics (HOA) Coefficient simplified abstract (Huawei Technologies Co., Ltd.)

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Method and Apparatus for Obtaining a Higher-Order Ambisonics (HOA) Coefficient

Organization Name

Huawei Technologies Co., Ltd.

Inventor(s)

Yuan Gao of Beijing (CN)

Shuai Liu of Beijing (CN)

Bin Wang of Shenzhen (CN)

Zhe Wang of Beijing (CN)

Tianshu Qu of Beijing (CN)

Jiahao Xu of Beijing (CN)

Method and Apparatus for Obtaining a Higher-Order Ambisonics (HOA) Coefficient - A simplified explanation of the abstract

This abstract first appeared for US patent application 18460861 titled 'Method and Apparatus for Obtaining a Higher-Order Ambisonics (HOA) Coefficient

Simplified Explanation

The patent application describes a method for obtaining higher-order ambisonics (HOA) coefficients for virtual speakers on a spherical surface. Here are the key points:

  • The method involves obtaining the location information of a virtual speaker on a preset spherical surface.
  • The preset spherical surface is divided into M circles of longitude and N circles of latitude.
  • Based on the location information and a preset reference trigonometric function table, a trigonometric function value corresponding to the location is obtained.
  • The reference trigonometric function table includes an elevation trigonometric function table and/or an azimuth trigonometric function table.
  • Finally, an HOA coefficient for the virtual speaker is obtained based on the trigonometric function value corresponding to the location.

Potential applications of this technology:

  • Virtual reality (VR) and augmented reality (AR) systems can benefit from accurate sound rendering using HOA coefficients.
  • Immersive audio experiences in gaming, movies, and virtual tours can be enhanced with realistic sound localization.
  • Audio production and post-production processes can utilize this method to create immersive soundscapes.

Problems solved by this technology:

  • The method provides a systematic approach to obtain HOA coefficients for virtual speakers on a spherical surface.
  • It simplifies the process of calculating trigonometric function values based on location information.
  • The method ensures accurate sound positioning and localization in virtual environments.

Benefits of this technology:

  • Improved audio realism and immersion in virtual reality and augmented reality experiences.
  • Simplified and efficient calculation of HOA coefficients for virtual speakers.
  • Enhanced sound localization and positioning accuracy in virtual environments.


Original Abstract Submitted

A method for obtaining a higher-order ambisonics (HOA) coefficient includes obtaining location information of a virtual speaker on a preset spherical surface, where the preset spherical surface includes M circles of longitude and N circles of latitude, and obtaining, based on the location information and a preset reference trigonometric function table, a trigonometric function value corresponding to the location information, where the reference trigonometric function table includes an elevation trigonometric function table and/or an azimuth trigonometric function table, and obtaining an HOA coefficient for the virtual speaker based on the trigonometric function value corresponding to the location information.

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