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A Stereo Sound Enhancement System

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

Active Publication Date: 2018-08-03
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

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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  • A Stereo Sound Enhancement System
  • A Stereo Sound Enhancement System
  • A Stereo Sound Enhancement System

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Embodiment Construction

[0068] The present invention will be further described now in conjunction with accompanying drawing.

[0069] like figure 1 As shown, the present invention provides a kind of stereo sound enhancement system, comprising: signal separation module 102, dialogue enhancement module 104, decorrelation processing module 106, signal synthesis module 108, environment sound effect module 110, virtual bass enhancement module 112 and dynamic range Control module 114; this system is used to preprocess the received stereo signal and then 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 described decorrelation processing module 106 is to pass the input of the module through a pair of decorrelation filters h LD and h RD After output x L1 and x R1 , the fil...

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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 sound 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 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 the above-mentioned electronic products are generally small-sized speakers. However, such a small-sized speaker has many defects. For example, the small speaker cannot effectively reproduce low-frequency signals due to physical constraints such as unit size; many speakers also have serious high-frequency loss. In short, the frequency response characteristics of this type of speaker are not good, and the nonlinear distortion is r...

Claims

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Application Information

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Patent Type & Authority Patents(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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