Evaluation of spatial active noise cancellation performance using spherical harmonic analysis

@article{Chen2016EvaluationOS,
  title={Evaluation of spatial active noise cancellation performance using spherical harmonic analysis},
  author={Hanchi Chen and Jihui Zhang and Prasanga N. Samarasinghe and Thushara Dheemantha Abhayapala},
  journal={2016 IEEE International Workshop on Acoustic Signal Enhancement (IWAENC)},
  year={2016},
  pages={1-5}
}
This paper presents a novel metric to evaluate the performance of spatial active noise cancellation (ANC) systems. We show that the acoustic potential energy within a spherical region can be expressed by a weighed squared sum of spherical harmonic coefficients. The proposed metric allows convenient evaluation of spatial ANC performance using a spherical microphone array. In order to evaluate the effectiveness of this metric, we set up a experimental ANC system and conducted a series narrow band… CONTINUE READING

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