Audio processing technology, 3D (three dimensional) virtual sound and applications of 3D virtual sound

Abstract

The invention relates to the technical field of audio processing, in particular to an audio processing technology, 3D virtual sound and applications of the 3D virtual sound. When a common 2.0 two-channel stereo audio file which is served as a signal to be identified enters a processor to be scanned, analyzed and identified by the processor; musical sound signals and noise signals are extracted, non-linear time matching between the signals to be identified and standard signals of a database is performed, then acoustic signals are continuously indentified; a sound model is built, and finally a sound source space is stretched and expanded, so that three-dimensional space information including length, width and height information is obtained, and the processed 2.0 two-channel stereo audio file after performing logic positioning on the time line is outputted. 3D audio effect (3D virtual sound) in the real sense can be realized through the audio processing technology. Compared with the common stereo sound, the 3D virtual sound adopts a mode that sound likes surrounding an auditor, the sound field produced by the mode not only remains the sound source direction sense of original signals, but also produces surrounding sense and expansion sense of sound.

Description

Technical field [0001] The invention relates to the technical field of audio processing, in particular to an audio processing technology, 3D phantom sound and its application. Background technique [0002] In the prior art, the traditional 2.0 dual-channel system can only achieve audio playback and cannot achieve the effect of stereo surround. To achieve 3D stereo surround sound, more equipment support is needed. Take Dolby's 5.1 surround sound system as an example. It needs to be equipped with 5 speakers, 1 subwoofer, Dolby decoding player, Dolby encrypted Blu-ray disc, 6 speakers arranged around, the listener is placed in the middle, and it is physically 3D sound effects. [0003] In addition, some of the 5.1 home theaters sold in the market can also achieve physical 3D sound effects, but they have the following shortcomings: [0004] 1. The cost is expensive. A 5.1 home theater costs 10,000 to 20,000 RMB, which is prohibitive for ordinary people. [0005] 2. Ordinary 5.1 home th...

AI Technical Summary

Problems solved by technology

[0004] 1. The cost is expensive. A set of 5.1 home theater costs 10,000 to 20,000 RMB. This price is prohibitive for ordinary people.

[0005] 2. Ordinary 5.1 home theaters must have a Blu-ray DVD supported by Dolby technology to play surround effects. If you play other audio sources, such as ordinary MP3 files, many speakers will not produce sound, and the 3D sound field cannot be realized. Effect