Individual Difference of Ultrasonic Transducers for Parametric Array Loudspeaker

Shota Minami; Jun Kuroda; Yasuhiro Oikawa

doi:10.1109/ICASSP.2018.8462189

Individual Difference of Ultrasonic Transducers for Parametric Array Loudspeaker

Shota Minami, Jun Kuroda, Yasuhiro Oikawa

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

A parametric array loudspeaker (PAL) consists of a lot of ultrasonic transducers in most cases and is driven by an ultrasonic which is modulated by audible sound. Because each ultrasonic transducer has each difference resonant frequency, there is the individual difference in ultrasonic transducers of a PAL in a manufacturing process. In this paper, two PALs are made of each set of transducers with large and small variance of resonant frequencies. Quality factor of PAL with the large variance of resonant frequencies is smaller than that of PAL with small variance, and the demodulated audible sound pressure level (SPL) is large and almost flat to 3 kHz in PAL with the large variance of resonant frequencies.

Original language	English
Title of host publication	2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	486-490
Number of pages	5
Volume	2018-April
ISBN (Print)	9781538646588
DOIs	https://doi.org/10.1109/ICASSP.2018.8462189
Publication status	Published - 2018 Sept 10
Event	2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Calgary, Canada Duration: 2018 Apr 15 → 2018 Apr 20

Other

Other	2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018
Country/Territory	Canada
City	Calgary
Period	18/4/15 → 18/4/20

Keywords

Resonant Frequency
SSB Modulation
Ultrasonic Transducer

ASJC Scopus subject areas

Software
Signal Processing
Electrical and Electronic Engineering

Access to Document

10.1109/ICASSP.2018.8462189

Cite this

Minami, S., Kuroda, J., & Oikawa, Y. (2018). Individual Difference of Ultrasonic Transducers for Parametric Array Loudspeaker. In 2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Proceedings (Vol. 2018-April, pp. 486-490). [8462189] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICASSP.2018.8462189

Individual Difference of Ultrasonic Transducers for Parametric Array Loudspeaker. / Minami, Shota; Kuroda, Jun; Oikawa, Yasuhiro.

2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Proceedings. Vol. 2018-April Institute of Electrical and Electronics Engineers Inc., 2018. p. 486-490 8462189.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Minami, S, Kuroda, J & Oikawa, Y 2018, Individual Difference of Ultrasonic Transducers for Parametric Array Loudspeaker. in 2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Proceedings. vol. 2018-April, 8462189, Institute of Electrical and Electronics Engineers Inc., pp. 486-490, 2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018, Calgary, Canada, 18/4/15. https://doi.org/10.1109/ICASSP.2018.8462189

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abstract = "A parametric array loudspeaker (PAL) consists of a lot of ultrasonic transducers in most cases and is driven by an ultrasonic which is modulated by audible sound. Because each ultrasonic transducer has each difference resonant frequency, there is the individual difference in ultrasonic transducers of a PAL in a manufacturing process. In this paper, two PALs are made of each set of transducers with large and small variance of resonant frequencies. Quality factor of PAL with the large variance of resonant frequencies is smaller than that of PAL with small variance, and the demodulated audible sound pressure level (SPL) is large and almost flat to 3 kHz in PAL with the large variance of resonant frequencies.",

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Individual Difference of Ultrasonic Transducers for Parametric Array Loudspeaker

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Keywords

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