Individual Difference of Ultrasonic Transducers for Parametric Array Loudspeaker

Shota Minami, Jun Kuroda, Yasuhiro Oikawa

    研究成果: Conference contribution

    1 被引用数 (Scopus)

    抄録

    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.

    本文言語English
    ホスト出版物のタイトル2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Proceedings
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ486-490
    ページ数5
    2018-April
    ISBN(印刷版)9781538646588
    DOI
    出版ステータスPublished - 2018 9月 10
    イベント2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Calgary, Canada
    継続期間: 2018 4月 152018 4月 20

    Other

    Other2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018
    国/地域Canada
    CityCalgary
    Period18/4/1518/4/20

    ASJC Scopus subject areas

    • ソフトウェア
    • 信号処理
    • 電子工学および電気工学

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