TY - GEN
T1 - Spatial noise cancellation inside cars
T2 - IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2015
AU - Chen, Hanchi
AU - Samarasinghe, Prasanga
AU - Abhayapala, Thushara D.
AU - Zhang, Wen
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/11/24
Y1 - 2015/11/24
N2 - A loudspeaker array is a key component in active noise cancellation (ANC) systems. Most in-car ANC systems utilize the car's own integrated loudspeakers to cancel the noise due to engine and other sources. In this paper, we evaluate the integrated loudspeakers' noise cancelling capabilities by analyzing the in-car noise field and the loudspeaker responses. We show that the average noise power in a spatial region can be expressed using a series of coefficients, and that the noise field can be decomposed into several basis noise patterns. Through analysing the measurements in a car, we show that the car's built-in loudspeakers are capable of attenuating the driving noise by up to 30 dB for frequencies up to 500 Hz within a spherical region of 10 cm radius.
AB - A loudspeaker array is a key component in active noise cancellation (ANC) systems. Most in-car ANC systems utilize the car's own integrated loudspeakers to cancel the noise due to engine and other sources. In this paper, we evaluate the integrated loudspeakers' noise cancelling capabilities by analyzing the in-car noise field and the loudspeaker responses. We show that the average noise power in a spatial region can be expressed using a series of coefficients, and that the noise field can be decomposed into several basis noise patterns. Through analysing the measurements in a car, we show that the car's built-in loudspeakers are capable of attenuating the driving noise by up to 30 dB for frequencies up to 500 Hz within a spherical region of 10 cm radius.
KW - Active noise cancellation
KW - loudspeaker array
KW - sound field analysis
KW - spherical harmonics
UR - http://www.scopus.com/inward/record.url?scp=84960914443&partnerID=8YFLogxK
U2 - 10.1109/WASPAA.2015.7336947
DO - 10.1109/WASPAA.2015.7336947
M3 - 会议稿件
AN - SCOPUS:84960914443
T3 - 2015 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2015
BT - 2015 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2015
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 18 October 2015 through 21 October 2015
ER -