TY - GEN
T1 - Evaluation of spatial active noise cancellation performance using spherical harmonic analysis
AU - Chen, Hanchi
AU - Zhang, Jihui
AU - Samarasinghe, Prasanga N.
AU - Abhayapala, Thushara D.
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/10/19
Y1 - 2016/10/19
N2 - 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 and wide band ANC experiments, the results show that the proposed potential energy method provides a reliable characterization of the performance of spatial ANC systems.
AB - 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 and wide band ANC experiments, the results show that the proposed potential energy method provides a reliable characterization of the performance of spatial ANC systems.
KW - Active noise control
KW - Higher-order microphones
KW - Spherical harmonics
UR - http://www.scopus.com/inward/record.url?scp=84997471105&partnerID=8YFLogxK
U2 - 10.1109/IWAENC.2016.7602968
DO - 10.1109/IWAENC.2016.7602968
M3 - Conference contribution
T3 - 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016
BT - 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th International Workshop on Acoustic Signal Enhancement, IWAENC 2016
Y2 - 13 September 2016 through 16 September 2016
ER -