Large-scale loudspeaker array system for sound field reproduction using high-speed 1 bit signal processing

Yusei Yamanaka, Daiki Takeuchi, Dai Kuze, Yasuke Ikeda, Yasuhiro Oikawa

    Research output: Contribution to journalConference article

    Abstract

    Recently, many techniques of physical sound field reproduction, such as Wave Field Synthesis, Higher Order Ambisonics and Boundary Surface Control, have been studied. Since the number of loudspeakers generally increases to control with higher spatial resolution and higher frequency, the system becomes too complicated to be constructed. On the other hand, high-speed 1bit signal processing has been studied widely. The 1 bit audio system has interesting features such as simple circuit implementation, simple signal transmission and no D/A converter. In this study, we proposed the large-scale loudspeaker array system with high-speed 1 bit signal. The system consists of a master and hub systems with sample rate of 4 MHz. The master system reads multi-channel 1bit signal from SSD and transmits it to each hub system. Each hub system drives 32 loudspeakers by CMOS drivers. The master and each hub system are connected with a LAN cable to implement only hub system near the loudspeakers. It is easy to scale the size of system with flexibility thanks to the simplicity of the circuit and signal flow. We conducted preliminary experiments to control its sound directivity. In the future, we are planning to construct 1536-channel sound reproduction system with our proposed system.

    Original languageEnglish
    Article number055005
    JournalProceedings of Meetings on Acoustics
    Volume29
    Issue number1
    DOIs
    Publication statusPublished - 2016 Nov 28
    Event172nd Meeting of the Acoustical Society of America - Honolulu, United States
    Duration: 2016 Nov 282016 Dec 2

    Fingerprint

    hubs
    loudspeakers
    sound fields
    signal processing
    high speed
    control surfaces
    signal transmission
    acoustics
    local area networks
    directivity
    cables
    converters
    planning
    CMOS
    flexibility
    spatial resolution
    high resolution
    synthesis

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics

    Cite this

    Large-scale loudspeaker array system for sound field reproduction using high-speed 1 bit signal processing. / Yamanaka, Yusei; Takeuchi, Daiki; Kuze, Dai; Ikeda, Yasuke; Oikawa, Yasuhiro.

    In: Proceedings of Meetings on Acoustics, Vol. 29, No. 1, 055005, 28.11.2016.

    Research output: Contribution to journalConference article

    @article{a7862600cbf94e728e14145329bcca38,
    title = "Large-scale loudspeaker array system for sound field reproduction using high-speed 1 bit signal processing",
    abstract = "Recently, many techniques of physical sound field reproduction, such as Wave Field Synthesis, Higher Order Ambisonics and Boundary Surface Control, have been studied. Since the number of loudspeakers generally increases to control with higher spatial resolution and higher frequency, the system becomes too complicated to be constructed. On the other hand, high-speed 1bit signal processing has been studied widely. The 1 bit audio system has interesting features such as simple circuit implementation, simple signal transmission and no D/A converter. In this study, we proposed the large-scale loudspeaker array system with high-speed 1 bit signal. The system consists of a master and hub systems with sample rate of 4 MHz. The master system reads multi-channel 1bit signal from SSD and transmits it to each hub system. Each hub system drives 32 loudspeakers by CMOS drivers. The master and each hub system are connected with a LAN cable to implement only hub system near the loudspeakers. It is easy to scale the size of system with flexibility thanks to the simplicity of the circuit and signal flow. We conducted preliminary experiments to control its sound directivity. In the future, we are planning to construct 1536-channel sound reproduction system with our proposed system.",
    author = "Yusei Yamanaka and Daiki Takeuchi and Dai Kuze and Yasuke Ikeda and Yasuhiro Oikawa",
    year = "2016",
    month = "11",
    day = "28",
    doi = "10.1121/2.0000644",
    language = "English",
    volume = "29",
    journal = "Proceedings of Meetings on Acoustics",
    issn = "1939-800X",
    publisher = "Acoustical Society of America",
    number = "1",

    }

    TY - JOUR

    T1 - Large-scale loudspeaker array system for sound field reproduction using high-speed 1 bit signal processing

    AU - Yamanaka, Yusei

    AU - Takeuchi, Daiki

    AU - Kuze, Dai

    AU - Ikeda, Yasuke

    AU - Oikawa, Yasuhiro

    PY - 2016/11/28

    Y1 - 2016/11/28

    N2 - Recently, many techniques of physical sound field reproduction, such as Wave Field Synthesis, Higher Order Ambisonics and Boundary Surface Control, have been studied. Since the number of loudspeakers generally increases to control with higher spatial resolution and higher frequency, the system becomes too complicated to be constructed. On the other hand, high-speed 1bit signal processing has been studied widely. The 1 bit audio system has interesting features such as simple circuit implementation, simple signal transmission and no D/A converter. In this study, we proposed the large-scale loudspeaker array system with high-speed 1 bit signal. The system consists of a master and hub systems with sample rate of 4 MHz. The master system reads multi-channel 1bit signal from SSD and transmits it to each hub system. Each hub system drives 32 loudspeakers by CMOS drivers. The master and each hub system are connected with a LAN cable to implement only hub system near the loudspeakers. It is easy to scale the size of system with flexibility thanks to the simplicity of the circuit and signal flow. We conducted preliminary experiments to control its sound directivity. In the future, we are planning to construct 1536-channel sound reproduction system with our proposed system.

    AB - Recently, many techniques of physical sound field reproduction, such as Wave Field Synthesis, Higher Order Ambisonics and Boundary Surface Control, have been studied. Since the number of loudspeakers generally increases to control with higher spatial resolution and higher frequency, the system becomes too complicated to be constructed. On the other hand, high-speed 1bit signal processing has been studied widely. The 1 bit audio system has interesting features such as simple circuit implementation, simple signal transmission and no D/A converter. In this study, we proposed the large-scale loudspeaker array system with high-speed 1 bit signal. The system consists of a master and hub systems with sample rate of 4 MHz. The master system reads multi-channel 1bit signal from SSD and transmits it to each hub system. Each hub system drives 32 loudspeakers by CMOS drivers. The master and each hub system are connected with a LAN cable to implement only hub system near the loudspeakers. It is easy to scale the size of system with flexibility thanks to the simplicity of the circuit and signal flow. We conducted preliminary experiments to control its sound directivity. In the future, we are planning to construct 1536-channel sound reproduction system with our proposed system.

    UR - http://www.scopus.com/inward/record.url?scp=85044229219&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=85044229219&partnerID=8YFLogxK

    U2 - 10.1121/2.0000644

    DO - 10.1121/2.0000644

    M3 - Conference article

    AN - SCOPUS:85044229219

    VL - 29

    JO - Proceedings of Meetings on Acoustics

    JF - Proceedings of Meetings on Acoustics

    SN - 1939-800X

    IS - 1

    M1 - 055005

    ER -