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

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...

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