Privately owned public space: Noise cancellation over multiple regions

Collaborators

Illustrations of multiple quiet zones in a shared environment, such as in a shared office.

Excessive amounts of acoustic noise pose a health risk to a majority of the population and this is the most signicant single cause of hearing loss in Australia. For example, the increasing noise at public spaces like train stations, airports, and construction sites are only increasing with the increasing population and urbanization. The most common method is to use passive control, i.e., sound absorbing material such as noise walls, to reduce the noise level. However, this method is very costly and not practical in complicated environments, especially when dealing with low-frequency noise, such as noise from machinery and industry plants and noise generated by automobiles/aircrafts. Therefore, active noise control (ANC) is fast becoming a favored method of noise cancellation.

This project aims to advance fundamental research in active noise control over spatial regions. It focuses on developing new theories and techniques to generate multiple quiet zones in indoor/outdoor noisy environments with performance prediction, robust control, and effective implementation. Outcomes of the project also include implementation of the multi-zone noise cancellation system in the lab environment for demonstration. In many practical applications, especially in consumer electronics and medical instruments, the creation of quiet zones is desirable so that in a shared environment people can have their own audio space without physical isolation or using headphones, creating a healthy living and working environment (e.g., quiet pods in airports/train stations/restaurants, individual quiet zones inside automobiles/airplanes etc.).

 

Funding

This is a discovery project (DP180102375) funded by the Australian Research Council (ARC) for 2018-2020.

References

  1. F. Ma, W. Zhang, and T. D. Abhayapala, ‘‘Active control of outgoing noise fields in rooms", in Journal of the Acoustical Society of America, vol. 144, no. 3, pp. 1589-1599, Sep. 2018. (link)
  2. J. Zhang, T. D. Abhayapala, W. Zhang, and P. N. Samarasinghe, ‘‘Active noise control over space: A subspace method for performance analysis’’, in Applied Sciences Special Issue Active and Passive Noise Control, vol. 9 no. 6, pp. 1250, March 2019. (link)
  3.  H. Sun, T. D. Abhayapala, P. N. Samarasinghe, “Time domain Spherical harmonic analysis for adaptive noise cancellation over a spatial region”, In  2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 516-520, Brighton, UK, May 2019 (link)
  4. L. Birnie, T. Abhayapala, H. Chen, P. Samarasinghe, “SOUND SOURCE LOCALIZATION IN A REVERBERANT ROOM USING HARMONIC BASED MUSIC”, In  2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 651-655, Brighton, UK, May 2019 (link)
  5. F. Ma, W. Zhang, and T. D. Abhayapala, ‘‘Real-time separation of non-stationary sound fields on spheres", in Journal of the Acoustical Society of America, vol. 146, no. 11, pp. 11-21, July 2019. (link)
  6. F. Ma, W. Zhang, and T. D. Abhayapala, ``Active control of outgoing broadband noise fields in rooms”. IEEE/ACM Transactions on Audio, Speech, and Language Processing, pp. 529 – 539, Dec. 2019. (link)
  7. J. Zhang, H. Sun, P. N. Samarasinghe, and T. D. Abhayapala, ``Active Noise Control Over Multiple Regions: Performance Analysis’’, In 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 8409-8413, May 2020. (link)
  8. H. Zuo, P. N. Samarasinghe and T. D. Abhayapala, "Intensity Based Spatial Soundfield Reproduction Using an Irregular Loudspeaker Array," in IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 28, pp. 1356-1369, Apr. 2020.(link)
  9. H. Zuo, T. D. Abhayapala and P. N. Samarasinghe, "Particle Velocity Assisted Three Dimensional Sound Field Reproduction Using a Modal-Domain Approach," in IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 28, pp. 2119-2133, July 2020.(link)

 

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