2018/02/28 by Yu Maeno, Yuki Mitsufuji, Maeno, Yu +3
Computer Science · Engineering · #Acoustic Wave Phenomena Research #Advanced Adaptive Filtering Techniques #Audio and Speech Processing (eess.AS) #FOS: Computer and information sciences #FOS: Electrical engineering #Signal Processing (eess.SP) #Sound (cs.SD) #Speech and Audio Processing #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.1803.00187
openalex publication_date 2018/02/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Active noise control (ANC) over a sizeable space requires a large number of\nreference and error microphones to satisfy the spatial Nyquist sampling\ncriterion, which limits the feasibility of practical realization of such\nsystems. This paper proposes a mode-domain feedforward ANC method to attenuate\nthe noise field over a large space while reducing the number of microphones\nrequired. We adopt a sparse reference signal representation to precisely\ncalculate the reference mode coefficients. The proposed system consists of\ncircular reference and error microphone arrays, which capture the reference\nnoise signal and residual error signal, respectively, and a circular\nloudspeaker array to drive the anti-noise signal. Experimental results indicate\nthat above the spatial Nyquist frequency,our proposed method can perform well\ncompared to a conventional methods. Moreover, the proposed method can even\nreduce the number of reference microphones while achieving better noise\nattenuation.\n