Adaptive active noise control display system

A technology of active control and display system, applied in the direction of sound-producing equipment, instruments, sensor parts, etc., can solve the problem of inconvenient noise control effect intuitive judgment and perception, inconvenient to understand and master, adaptive noise active control technology is inconvenient to intuitively display, etc. problems, to achieve the effect of being conducive to promotion and application expansion, flexible layout, convenient disassembly and adjustment

Pending Publication Date: 2017-11-24
JILIN UNIV
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AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems that the existing adaptive noise active control technology is inconvenient for intuitive display, inconvenient for people to understand and master, and inconvenient for people to intuitively judge and perceive the

Method used

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  • Adaptive active noise control display system
  • Adaptive active noise control display system

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specific Embodiment approach 1

[0018] Specific implementation mode 1. Combination figure 1 and figure 2 To illustrate this embodiment, the adaptive noise active control display system includes: a display stand 1, a controller 2, a primary sound source speaker 3, a secondary sound source speaker 4, an error microphone 5, a power adapter 6, and a liquid crystal touch screen 7, The display stand 1 is the installation base of other components in the system. The controller 2, the primary sound source speaker 3, the secondary sound source speaker 4, the error microphone 5 and the liquid crystal touch screen 7 are all installed on the display stand 1 in a mechanical connection mode; the controller 2 is respectively connected to the primary sound source speaker 3, The secondary sound source speaker 4, the error microphone 5, the power adapter 6, and the liquid crystal touch screen 7 are electrically connected, and are mechanically connected with the display stand 1.

[0019] The control unit 2-1 is composed of a...

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Abstract

The invention relates to the technical field of active noise control, particularly to an adaptive active noise control display system, so that problems that visual displaying of the existing adaptive active noise control technique can not be realized, people can not understand and master the technique conveniently, and people can not determine and sense the noise control effect conveniently are solved. The adaptive active noise control display system is composed of a display rack, a control unit, a primary sound source loudspeaker, a secondary sound source loudspeaker, an error microphone and an LCD touch screen. The control unit controls the primary sound source loudspeaker to send out single-frequency or composite-frequency noises by controlling the key of the LCD touch screen or dial switch selection, thereby forming a primary sound field; the error microphone obtains a noise signal of the primary sound field; the noise signal of the primary sound field and an error sound channel function obtained by identification are analyzed to obtain a secondary sound source signal; and the control unit controls the secondary sound source loudspeaker make sounds to realize adaptive active noise control so as to eliminate the secondary sound field noises. And changes of noises before and after active control implementation are compared visually by observing the touch screen.

Description

technical field [0001] The invention relates to an adaptive noise active control display system, in particular to an adaptive noise active control display system that can visually display adaptive noise active control technology and principles from both auditory and visual aspects. Background technique [0002] At present, the main components of the noise inside the car are concentrated in the low frequency band, which seriously affects the ride comfort of the car, the user's car purchase orientation and the market competitiveness of the model. The traditional passive noise control method can effectively control the medium and high-frequency noise in the car, but the control effect on the low-frequency noise in the car is poor. With the rapid development of acoustic theory, testing technology, adaptive control methods and electronic technology, Active Noise Control (ANC) technology is becoming more and more practical, and can well solve energy-saving and new energy vehicles ...

Claims

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Application Information

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IPC IPC(8): G10K11/175H04R3/00
CPCH04R3/00G10K11/175
Inventor 王登峰陈辉胥国文段江浩曹晓琳车晓镭
Owner JILIN UNIV
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