dc.contributor.authorJi, Peifeng.
dc.contributor.authorLiu, Wei.
dc.contributor.authorWu, Shuaibing.
dc.contributor.authorYang, Jun.
dc.contributor.authorGan, Woon-Seng
dc.date.accessioned2013-07-31T06:11:11Z
dc.date.available2013-07-31T06:11:11Z
dc.date.copyright2012en_US
dc.date.issued2012
dc.identifier.citationJi, P., Liu, W., Wu, S., Yang, J.,& Gan, W. S. (2012). An alternative method to measure the on-axis difference-frequency sound in a parametric loudspeaker without using an acoustic filter. Applied Acoustics, 73(12), 1244-1250.en_US
dc.identifier.issn0003-682Xen_US
dc.identifier.urihttp://hdl.handle.net/10220/12609
dc.description.abstractThe self-demodulation characteristic of finite-amplitude ultrasonic sound waves can be applied with parametric loudspeaker to reproduce audible sound with highly directivity. But measuring the difference-frequency sound is still a problem due to the spurious sound generated as a result of nonlinearity caused by the product of the primary waves at the receiving system. In this paper, based on the phase-cancellation method and the Gaussian beam expansion technique, an alternative method is proposed to measure the on-axis difference-frequency sound accurately without using any traditional acoustic filter, where the spurious sound can be greatly reduced or even eliminated. The proposed method is more suitable for the case where the piston source in the parametric loudspeaker comprises multiple small piezoelectric transducers (PZTs) and each transducer element in the array may have different frequency response. The validity of the proposed method is confirmed both by simulations and experiments.en_US
dc.language.isoenen_US
dc.relation.ispartofseriesApplied acousticsen_US
dc.subjectDRNTU::Engineering::Electrical and electronic engineering
dc.titleAn alternative method to measure the on-axis difference-frequency sound in a parametric loudspeaker without using an acoustic filteren_US
dc.typeJournal Article
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.identifier.doihttp://dx.doi.org/10.1016/j.apacoust.2012.04.010


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record