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Method for mixing down multiple channels into 3-channel surrounding sound

一种环绕声、多声道的技术，应用在立体声系统、电气元件等方向，能够解决成本高、安装繁琐等问题，达到成本简化、安装使用便利的效果

Active Publication Date: 2013-08-21
GUOGUANG ELECTRIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its high cost and cumbersome installation also have certain disadvantages

Method used

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  • Method for mixing down multiple channels into 3-channel surrounding sound
  • Method for mixing down multiple channels into 3-channel surrounding sound
  • Method for mixing down multiple channels into 3-channel surrounding sound

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] see image 3 shown, including:

[0035] Step s01: Decode the data stream into a multi-channel signal through Dolby or DTS.

[0036] Among them, the multi-channel signal can be a 5.1, 6.1 or 7.1 channel signal, and the 5.1 channel includes the front "left channel L", "center channel C", "right channel R", rear " Left Surround Channel SL" and "Right Surround Channel SR". The frequency range of these channels is the full frequency range response 3-20000Hz, and a subwoofer channel SW is also included. Since the frequency response of this channel is 3-120Hz, it is not complete, so it is called...

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PUM

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Abstract

This invention is related to audio field, providing a method to downmix multi-channel sounds into a 3-channel surround sound. This invention concerns reprocessing of encoded traditional multi-channel signals and downmixing it into a 3.1-channel signal by using the principles of signal distribution and virtualization. Its hardware can be established by adding only one rear channel speaker on the basis of the 2.1 system. When comparing with the current multi-channel systems, the present invention simplifies the connections, cuts the cost, and provides ease of installation and use, and is especially suitable for achieving surround sound effect in family flat-panel TV, 3D TV or car surround speaker, and PC multimedia surround systems.

Description

technical field [0001] The invention relates to the field of audio technology, in particular to a method for downmixing multi-channel into 3-channel surround sound. Background technique [0002] With the continuous improvement of people's material living standards, people have higher and higher requirements for audio equipment or flat-panel TV playback systems with audio functions; figure 1 As shown, it includes: main power amplifier, left speaker, right speaker and subwoofer, and the left speaker, right speaker and subwoofer are respectively connected to the main power amplifier by wire. Although 2.1 surround sound can meet the needs of users to a certain extent, 2-channel stereo or virtual surround sound and multi-channel surround sound developed on the basis of 2-channel (such as: 5.1 or 6.1 and 7.1 multi-channel surround audio), its effect is far from the effect of multi-channel surround sound. [0003] Existing 5.1 or 6.1 and 7.1 multi-channel surround sound, such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04S3/00
CPCH04S3/008H04S3/00H04S2400/03
Inventor 沈紫辉
Owner GUOGUANG ELECTRIC
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