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Apparatus and method of reproduction virtual sound of two channels

A two-channel and one-channel technology, applied in the field of stereo sound generation devices, can solve problems such as difficulty in obtaining surround sound effects and confusion

Inactive Publication Date: 2007-03-28
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
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Problems solved by technology

Also, due to the use of standard dummy heads, this also leads to front / rear aliasing and makes it difficult to get the effect of surround channels

Method used

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  • Apparatus and method of reproduction virtual sound of two channels
  • Apparatus and method of reproduction virtual sound of two channels
  • Apparatus and method of reproduction virtual sound of two channels

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Embodiment Construction

[0042] Embodiments of the present general inventive concept will now be described in detail, examples of which are illustrated in the accompanying drawings. Like reference numerals refer to like elements throughout the drawings. The embodiments are described in order to explain the present general inventive concept by referring to the figures.

[0043] FIG. 2 is a block diagram showing a stereo sound generating apparatus for reproducing a multi-channel audio signal through two channels according to an embodiment of the present invention.

[0044] The stereo sound producing device represented in Fig. 2 comprises multi-channel audio signal 100, virtual surround filter unit 200, signal correction filter unit 300, first adding unit 401, second adding unit 402, left channel loudspeaker 500 and Right channel speaker 600.

[0045] The multi-channel audio signal 100 includes a left channel signal (L), a center channel signal (C), a low frequency effects channel signal (LFE), a right...

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PUM

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Abstract

A stereo sound generation apparatus of reproducing multi-channel sound input signals through two-channel speakers. The stereo sound generation apparatus includes: a preprocessing filter unit to reduce correlation between two-channel audio signals from among multi-channel audio signals and to generate a presence perception, a virtual speaker filter unit to convert the two-channel audio signals output from the preprocessing filter unit into a virtual sound source at a predetermined position, a signal correction filter unit to correct a signal characteristic between remaining multi-channel audio signals excluding the two-channel audio signals, and the two-channel audio signals output from the virtual speaker filter unit, and an addition unit to add signals to be output to a first channel from among the multi-channel audio signals output from the virtual speaker filter unit and the signal correction filter unit, and to add signals to be output to a second channel from among the multi-channel audio signals output from the virtual speaker filter unit and the signal correction filter unit.

Description

technical field [0001] The present invention relates to a stereophonic system, in particular to a stereophonic generation device and method, which are used to generate a virtual sound source of a two-channel audio signal while adjusting the output gain and time delay of the remaining channel audio input signal, so that Can provide a natural stereo feeling. Background technique [0002] Generally, an audio reproduction system provides a surround sound effect by using only two speakers, such as a 5.1-channel system. [0003] A conventional method for reproducing 5.1-channel audio through 2-channel speakers is described in WO 99 / 49574 (PCT / AU99 / 00002 entitled "Audio Signal Processing Method and Apparatus" filed 6 January 1999). stereo sound generation system. [0004] FIG. 1 is a block diagram showing a conventional stereo sound generation system 1 . Referring to Fig. 1, the conventional sound generation system includes: a part related to the convolution of the input signal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S1/00
Inventor 金善民朴尚日
Owner SAMSUNG ELECTRONICS CO LTD
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