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Sound system

一种声音、声音特征的技术，应用在处理音频数据的系统领域，能够解决扬声器缺乏稳定性等问题

Inactive Publication Date: 2012-01-11
理查德·福塞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires precise fitting of the loudspeaker layout and it can be seen that there is a lack of stability with respect to the placement of the loudspeakers, especially at higher frequencies

Method used

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Embodiment Construction

[0056] figure 1 An example system 100 is shown for processing and playing audio signals according to an embodiment of the invention. figure 1 Each of the components shown in may be implemented as a hardware component, or as a software component running on the same or different hardware. The system includes a DVD player 110 and a gaming device 120 , both of which provide output to the transformation engine 104 . The game device player 120 may be a general-purpose personal computer, or a game console such as "Xbox".

[0057] The game device 120 provides output to the renderer 112, for example in the form of OpenAL calls from the game being played, and uses these outputs to construct a multi-channel audio stream representing the game's sound field in a format such as the Ambisonic B format; Then, the Ambisonic B format stream is output to the conversion engine 104 .

[0058] DVD player 110 can provide output to transformation engine 104 in, for example, 5.1 surround sound or s...

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PUM

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Abstract

In some embodiments of the invention one or more sound characteristics, such as gain or frequency, of a given component of a spatial audio signal are modified in dependence on a relationship between a direction characteristic of the given component and a defined range of direction characteristics. A plurality of transforms. each relating to a different frequency range, is preferably used to modify the sound characteristics. In some embodiments, spatial audio in a format using a spherical harmonic representation of sound components is decoded by performing a transform on the spherical harmonic representation, in which the transform is based on a predefined speaker layout and a predefined rule. The predefined rule indicates a gain of each speaker, when reproducing sound incident from a given direction. In some embodiments, a plurality of matrix transforms is combined into a combined transform, and the combined transform is performed on an audio signal.

Description

technical field [0001] The present invention relates to systems and methods for processing audio data. In particular, the present invention relates to systems and methods for processing spatial audio data. Background technique [0002] The simplest form of audio data is in the form of monaural data representing sound characteristics such as frequency and volume; this is called a monaural signal. Stereo audio data is a very successful audio data format that includes binaural audio data and thus contains, to some extent, the directional characteristics of the sound represented by the audio data. More recently, audio formats have grown in popularity, including surround sound formats, which may include more than two channels of audio data and include two- or three-dimensional directional characteristics of the represented sound. [0003] As used herein, the term "spatial audio data" refers to any data containing information about the directional characteristics of represented ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S3/00H04S7/00
CPCH04S2420/11H04S7/00H04S3/00H04S2420/01G06F17/14H04S1/00H04S7/308H04S3/02G10L19/0212H04S7/30
Inventor 理查德·福塞
Owner 理查德·福塞
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