Method and apparatus for rendering acoustic signal, and computer-readable recording medium

Abstract

In cases of rendering a multichannel signal such as a 22.2 channel signal as a 5.1 channel signal, a three dimensional (3D) audio signal may be reproduced using a two dimensional (2D) output channel, but rendered audio signals are sensitively affected by a layout of speakers and may cause distortion of a sound image when the layout of arranged speakers is different from a standard layout. The present invention may solve the aforementioned problem of the prior art. The audio signal rendering method for reducing distortion of a sound image even when the layout of the arranged speakers is different from the standard layout, according to one embodiment of the present invention, includes: receiving a multi-channel signal including a plurality of input channels that are to be converted to a plurality of output channels; obtaining deviation information about at least one output channel, from a location of a speaker and a standard location corresponding to each of the plurality of output channels; and modifying a panning gain from a height channel included in the plurality of input channels to the output channel having the deviation information, based on obtained deviation information.

Description

TECHNICAL FIELD[0001]The inventive concept relates to a method and apparatus for rendering audio signal, and more particularly, to a rendering method and apparatus for reproducing location of a sound image and tone color more accurately, by modifying a panning gain or a filter coefficient when there is a misalignment between a standard layout and an arrangement layout of output channels.BACKGROUND ART[0002]Stereophonic sound denotes a sound, to which spatial information is added, capable of reproducing a direction or a distance of a sound, as well as pitch and tone color of a sound, allowing a listener to have an immersive feeling, and making a listener, who does not exist in a space where a sound source has occurred, experience directional, distance, and spatial perceptions.[0003]When a channel signal such as a 22.2 channel is rendered as a 5.1 channel, a three-dimensional (3D) stereophonic sound may be reproduced using a two-dimensional (2D) output channel, but rendered audio sign...

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