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Stereo sound effect enhancement system

A technology for enhancing system and stereo sound, applied in the field of acoustic signal processing, which can solve problems such as poor bass reproduction effect, small dynamic range of loudspeaker, poor surround sound effect, etc., to improve surround sound effect, improve clarity, and improve The effect of auditory perception

Active Publication Date: 2017-04-19
INST OF ACOUSTICS CHINESE ACAD OF SCI
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that in the prior art, the actually presented sound field is relatively narrow, so that the surround sound effect is not good, the dialogue signal is submerged in the ambient sound, resulting in unclear dialogue, poor bass reproduction effect and loudspeaker dynamics. The problem of small range, the present invention provides a stereo sound enhancement system

Method used

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Embodiment Construction

[0068] The present invention will now be further described with reference to the drawings.

[0069] Such as figure 1 As shown, the present invention provides a stereo sound effect enhancement system, including: a signal separation module 102, a dialogue enhancement module 104, a decorrelation processing module 106, a signal synthesis module 108, an environmental sound effect module 110, a virtual bass enhancement module 112 and a dynamic range Control module 114; the system is used to preprocess the received stereo signal and output it to the playback device to obtain the desired sound effect.

[0070] The dialogue enhancement module 104 is an IIR or FIR filter, and the amplitude-frequency response of the filter is designed with reference to the inverse of the loudness curve of the human ear;

[0071] The decorrelation processing module 106 is to pass the input of the module through a pair of decorrelation filters h LD And h RD Output x L1 And x R1 , The filter h LD And h RD It ...

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Abstract

The invention relates to a stereo sound effect enhancement system, which comprises a signal separation module, a dialogue enhancement module, a decorrelation processing module, a signal synthesis module, an environment sound effect module, a virtual bass enhancement module and a dynamic range control module. The system is used for preprocessing a received stereo signal and outputting the stereo signal to a playing device to obtain a desired sound effect.

Description

Technical field [0001] The invention relates to the technical field of acoustic signal processing, in particular to a stereo sound effect enhancement system. Background technique [0002] At present, multi-channel surround sound systems have been widely used, such as the 5.1 / 7.1 format of Dolby and DTS and the 22.2 format of NHK. However, in these terminal devices such as notebook computers, smart TVs, PADs, wireless speakers, and mobile phones, the two-channel stereo format system is still widely used and will exist for a long time. The playback devices of these electronic products are generally small-sized speakers. However, such small-sized speakers have many disadvantages. For example, small speakers cannot effectively reproduce low-frequency signals due to physical conditions such as unit size; many speakers have serious high-frequency losses. In short, this type of speaker has poor frequency response characteristics and serious nonlinear distortion. In many practical app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R5/00
Inventor 杨飞然朱睿朱乔茜杨军
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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