TY - GEN
T1 - Preprocessing techniques for parametric loudspeakers
AU - Tan, Ee Leng
AU - Gan, Woon Seng
AU - Yang, Jun
PY - 2008
Y1 - 2008
N2 - Non-linear interaction of ultrasound waves can be applied to reproduce audible sound with parametric loudspeaker. This can be explained with the self-demodulation property of finite amplitude ultrasonic waves. A special characteristic of the reproduced sound waves using parametric loudspeaker is its high directivity. However, the distortion of the demodulated signal is highly dependent on the preprocessing techniques used. From our simulation results, we have shown that the distortion of the demodulated signal is significantly reduced with an orthogonal carrier.
AB - Non-linear interaction of ultrasound waves can be applied to reproduce audible sound with parametric loudspeaker. This can be explained with the self-demodulation property of finite amplitude ultrasonic waves. A special characteristic of the reproduced sound waves using parametric loudspeaker is its high directivity. However, the distortion of the demodulated signal is highly dependent on the preprocessing techniques used. From our simulation results, we have shown that the distortion of the demodulated signal is significantly reduced with an orthogonal carrier.
UR - http://www.scopus.com/inward/record.url?scp=51849102572&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51849102572&partnerID=8YFLogxK
U2 - 10.1109/ICALIP.2008.4590234
DO - 10.1109/ICALIP.2008.4590234
M3 - Conference contribution
AN - SCOPUS:51849102572
SN - 9781424417230
T3 - ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing, Proceedings
SP - 1204
EP - 1208
BT - ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing, Proceedings
T2 - ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing
Y2 - 7 July 2008 through 9 July 2008
ER -