Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Department of Mechanical Engineering | en_US |
| dc.contributor.advisor | Choy, Yat Sze (ME) | en_US |
| dc.creator | Zhao, Jingyuan | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/10799 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | en_US |
| dc.rights | All rights reserved | en_US |
| dc.title | Sound source localization and identification by array microphone | en_US |
| dcterms.abstract | The need to locate a specific sound source exists in many industries. Beamforming technology has been applied in various scenes due to its excellent performance. The most basic beamforming algorithm is the DAS algorithm. On this basis, many optimization algorithms are proposed, including LCMV algorithm, MUSIC algorithm and so on. At the same time, the influence of microphone array on beamforming is gradually discovered, and various optimization methods of microphone array are proposed. For the high-speed moving sound source, the optimized beamforming technology can also be used to identify the real-time position of the sound source. This technology is widely used to detect the noise source of trains and airplanes, so as to reduce the noise generated during the high-speed movement. In this paper, some beamforming algorithms are studied and simulated, the effect of different conditions on the performance of beamforming is discussed. Next, the experiment of sound source localization is carried out to verify these algorithms in practice. Then, a system for measuring moving sound source is built, including a camera for speed measurement and a microphone array for collecting sound signal, and the feasibility of this system is verified by experiments. Finally, after the actual positioning experiments on the MTR train, some improved schemes for the microphone array are proposed. | en_US |
| dcterms.extent | xiii, 99 pages : color illustrations | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 2020 | en_US |
| dcterms.educationalLevel | M.Sc. | en_US |
| dcterms.educationalLevel | All Master | en_US |
| dcterms.LCSH | Beamforming | en_US |
| dcterms.LCSH | Microphone arrays | en_US |
| dcterms.LCSH | Signal processing | en_US |
| dcterms.LCSH | Hong Kong Polytechnic University -- Dissertations | en_US |
| dcterms.accessRights | restricted access | en_US |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 5236.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 5.99 MB | Adobe PDF | View/Open |
Copyright Undertaking
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item:
https://theses.lib.polyu.edu.hk/handle/200/10799