Spatial active noise control

Active noise control (ANC) is a technique to reduce noise by a canceling loudspeaker and monitoring microphone, which has been applied to local or one-dimensional space such as earphones and air ducts. Spatial ANC aims to reduce noise over a three-dimensional target region. However, conventional techniques can reduce noise only at microphone positions. We develop a new spatial ANC technique to reduce regional noise by estimating a noise field with microphones and synthesizing an anti-noise field with loudspeakers.

References

• S. Koyama, J. Brunnström, H. Ito, N. Ueno, and H. Saruwatari, “Spatial Active Noise Control Based on Kernel Interpolation of Sound Field,” IEEE/ACM Trans. Audio, Speech, Lang. Process., vol. 29, pp. 3052-3063, 2021.
• H. Ito, S. Koyama, N. Ueno, and H. Saruwatari, “Feedforward Spatial Active Noise Control Based on Kernel Interpolation of Sound Field,” in Proc. IEEE Int. Conf. Acoust., Speech, Signal Process. (ICASSP), pp. 511-515, Brighton, May, 2019.