Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Separable Active Noise Control System

An active noise control and separate technology, which is applied in the direction of sound-emitting devices and instruments, can solve the problem of limiting the promotion and popularization of active noise controllers and active noise control applications, the complexity of active noise controllers, and the cost of design and use Advanced problems, to achieve the effect of low power consumption, high efficiency and low cost

Active Publication Date: 2019-07-09
NANJING UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The active noise controller is more complicated, the design and use cost are high, the power consumption is large, and the price is expensive;
[0004] 2. Existing active controllers are mainly for researchers, requiring installation and commissioning personnel to master more professional knowledge, and the operation process is relatively complicated
[0005] These limit the promotion and popularization of active noise controllers and active noise control applications

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Separable Active Noise Control System
  • Separable Active Noise Control System
  • Separable Active Noise Control System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] An implementation example of the detachable active noise control system involved in the present invention is given below.

[0037] according to figure 1 As shown in the schematic block diagram, the specific implementation details of the system of this embodiment are as follows:

[0038] 1. Use one AD73311 chip produced by Analog Devices, Inc. to realize the analog-to-digital converter (4) and the digital-to-analog converter (5) in the control module (1). Each AD73311 provides 1 channel analog to digital and 1 channel digital to analog conversion;

[0039] 2. Adopt 1 AD73311 chip produced by American Analog Devices (Analog Devices, Inc.) to realize the analog-to-digital converter (4) in the training module (2);

[0040] 3. The core device of the digital operation unit A(6) is realized by using the Cyclone III series FPGA products produced by Altera Corporation of the United States;

[0041] 4. The TMS320C6748 (floating-point DSP) of Texas Instruments, Inc. is used to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a separable active noise control system. A controller is used for noise control in a stable sound field environment. The controller is used to divide an active noise controller into two independent modules, namely a training module and a control module. The control module has a function of simulating a sound field path, and is mainly used for the simulation of the sound field path from the reference source to the control source, and is used to reduce the sound pressure in the specific area. The training module and the control module can work in a combined manner, and are mainly used for the cooperation of the sound field paths during the active noise control. The system provided by the invention can work in the fixed control working mode and the self-adaption working mode, and is advantageous in that in the fixed control working mode, the control module can work independently; the function is single, the size is small, the cost is low, the power consumption is low, the parallelism is strong, and the processing time delay can be reduced; in the self-adaption working mode, the control module and the training module can work in a cooperative manner, and the connection is convenient and fast, the operation is simple, and the use efficiency is high, and in addition, one training module is used for a plurality of control modules, and therefore the system debugging installation can be facilitated.

Description

technical field [0001] The invention relates to the field of active noise control, in particular to a detachable active noise control system. The invention separates the traditional active noise controller in the form of a control module and a training module, which has strong versatility and high use efficiency. Particularly suitable, but not limited to, active noise control applications where the sound field is relatively stable. Background technique [0002] In recent years, with the development of industrialization and urban traffic, people's requirements for noise reduction in the surrounding environment are becoming more and more urgent. Active noise is a special noise reduction method. Compared with traditional noise control, active noise control is more effective for low-frequency noise control. In addition to its small size and flexible settings, it has a wider application prospect. Therefore, it has attracted more and more attention from academia, industry and the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G10K11/178
CPCG10K11/178
Inventor 陈锴卢晶邹海山陶建成林志斌邱小军李宁荣
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com