Active noise control of construction noise
Urban noise pollution is a ubiquitous but often neglected threat to public health. Particularly, the low-frequency noises emitted by construction equipment and machines are of concern due to the chronic health issues that can develop from long term exposure. Current adopted noise control method...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
Nanyang Technological University
2024
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| Online Access: | https://hdl.handle.net/10356/176904 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Urban noise pollution is a ubiquitous but often neglected threat to public health.
Particularly, the low-frequency noises emitted by construction equipment and
machines are of concern due to the chronic health issues that can develop from long
term exposure. Current adopted noise control methods are dominated by passive
measures, which are easily scalable, but have limited effectiveness for the deleterious
low-frequency range. Active Noise Control (ANC) methods have been demonstrated
the ability to mitigate these low frequencies appreciably, but have yet to achieve
compelling cost-effectiveness for widespread adoption. Hence, a low-cost ANC
solution is explored with the STM32 H723ZG board. Several ANC algorithms (MISO
Feedforward, SISO Feedback, MIMO Feedforward) have been developed to explore
the board capabilities to effectively control power generator noise. Simulated testing
in the laboratory and field experiments have shown the success of the low-cost
implementation, with substantial noise reduction of >10dBC at far-field locations
of >200cm from the noise source. |
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