TY - GEN
T1 - On the linearization of a parametric loudspeaker system by using third-order inverse Volterra filters
AU - Mu, Yongsheng
AU - Ji, Peifeng
AU - Ji, Wei
AU - Wu, Ming
AU - Yang, Jun
PY - 2013
Y1 - 2013
N2 - Due to the nonlinear interaction between the ultrasonic waves emitted by the parametric loudspeaker, a directional sound beam is generated along with harmonic distortion. It is known that the single sideband amplitude modulation (SSB-AM) technique is one of the most effective ways of reducing the harmonics. A 3rd-order inverse Volterra filter (VF) is designed on the basis of the SSB-AM in this paper to further compensate the nonlinearities of the parametric loudspeaker. Meanwhile, the diagonal Volterra filter (DVF) with the advantage of lower complexity compared to the conventional VF is also proposed. The experimental results demonstrate that the inverse DVF is able to reduce the harmonic distortion to meet high fidelity requirement nearly the same as the inverse VF while requiring less computational resources.
AB - Due to the nonlinear interaction between the ultrasonic waves emitted by the parametric loudspeaker, a directional sound beam is generated along with harmonic distortion. It is known that the single sideband amplitude modulation (SSB-AM) technique is one of the most effective ways of reducing the harmonics. A 3rd-order inverse Volterra filter (VF) is designed on the basis of the SSB-AM in this paper to further compensate the nonlinearities of the parametric loudspeaker. Meanwhile, the diagonal Volterra filter (DVF) with the advantage of lower complexity compared to the conventional VF is also proposed. The experimental results demonstrate that the inverse DVF is able to reduce the harmonic distortion to meet high fidelity requirement nearly the same as the inverse VF while requiring less computational resources.
KW - 3rd-order inverse
KW - diagonal Volterra filter
KW - nonlinearity
KW - Parametric loudspeaker
UR - http://www.scopus.com/inward/record.url?scp=84889573196&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84889573196&partnerID=8YFLogxK
U2 - 10.1109/ChinaSIP.2013.6625405
DO - 10.1109/ChinaSIP.2013.6625405
M3 - Conference contribution
AN - SCOPUS:84889573196
SN - 9781479910434
T3 - 2013 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2013 - Proceedings
SP - 570
EP - 574
BT - 2013 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2013 - Proceedings
T2 - 2013 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2013
Y2 - 6 July 2013 through 10 July 2013
ER -