System for actively reducing sound

    Research output: Patent

    13 Downloads (Pure)

    Abstract

    A system for actively reducing sound from a primary noise source, such as traffic noise, comprising: a loudspeaker connector for connecting to at least one loudspeaker for generating anti-sound for reducing said noisy sound; a microphone connector for connecting to at least a first microphone placed adjacent to said loudspeaker; a control unit coupled to said first microphone connector, for providing an error signal, based on the output of said first microphone; and a control unit for outputting a signal to said loudspeaker connector, for controlling said loudspeaker based on said error signal of said control unit; control unit. According to the invention, said control unit is provided with a processor adapted to provide said error signal as a simulated error signal of a virtual microphone placed in the far-field of the loudspeaker. In this way a better noise suppression in the far-field can be achieved.
    Original languageUndefined
    Patent numberEP20050729401
    Priority date13/10/05
    Publication statusSubmitted - 31 Mar 2005

    Keywords

    • IR-64785
    • METIS-248179
    • EWI-12800

    Cite this

    Berkhoff, A. P. (2005). System for actively reducing sound. Manuscript submitted for publication. (Patent No. EP20050729401).
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    title = "System for actively reducing sound",
    abstract = "A system for actively reducing sound from a primary noise source, such as traffic noise, comprising: a loudspeaker connector for connecting to at least one loudspeaker for generating anti-sound for reducing said noisy sound; a microphone connector for connecting to at least a first microphone placed adjacent to said loudspeaker; a control unit coupled to said first microphone connector, for providing an error signal, based on the output of said first microphone; and a control unit for outputting a signal to said loudspeaker connector, for controlling said loudspeaker based on said error signal of said control unit; control unit. According to the invention, said control unit is provided with a processor adapted to provide said error signal as a simulated error signal of a virtual microphone placed in the far-field of the loudspeaker. In this way a better noise suppression in the far-field can be achieved.",
    keywords = "IR-64785, METIS-248179, EWI-12800",
    author = "Berkhoff, {Arthur P.}",
    year = "2005",
    month = "3",
    day = "31",
    language = "Undefined",
    type = "Patent",
    note = "EP20050729401",

    }

    Berkhoff, AP 2005, System for actively reducing sound, Patent No. EP20050729401.

    System for actively reducing sound. / Berkhoff, Arthur P. (Inventor).

    Patent No.: EP20050729401.

    Research output: Patent

    TY - PAT

    T1 - System for actively reducing sound

    AU - Berkhoff, Arthur P.

    PY - 2005/3/31

    Y1 - 2005/3/31

    N2 - A system for actively reducing sound from a primary noise source, such as traffic noise, comprising: a loudspeaker connector for connecting to at least one loudspeaker for generating anti-sound for reducing said noisy sound; a microphone connector for connecting to at least a first microphone placed adjacent to said loudspeaker; a control unit coupled to said first microphone connector, for providing an error signal, based on the output of said first microphone; and a control unit for outputting a signal to said loudspeaker connector, for controlling said loudspeaker based on said error signal of said control unit; control unit. According to the invention, said control unit is provided with a processor adapted to provide said error signal as a simulated error signal of a virtual microphone placed in the far-field of the loudspeaker. In this way a better noise suppression in the far-field can be achieved.

    AB - A system for actively reducing sound from a primary noise source, such as traffic noise, comprising: a loudspeaker connector for connecting to at least one loudspeaker for generating anti-sound for reducing said noisy sound; a microphone connector for connecting to at least a first microphone placed adjacent to said loudspeaker; a control unit coupled to said first microphone connector, for providing an error signal, based on the output of said first microphone; and a control unit for outputting a signal to said loudspeaker connector, for controlling said loudspeaker based on said error signal of said control unit; control unit. According to the invention, said control unit is provided with a processor adapted to provide said error signal as a simulated error signal of a virtual microphone placed in the far-field of the loudspeaker. In this way a better noise suppression in the far-field can be achieved.

    KW - IR-64785

    KW - METIS-248179

    KW - EWI-12800

    M3 - Patent

    M1 - EP20050729401

    ER -

    Berkhoff AP, inventor. System for actively reducing sound. EP20050729401. 2005 Mar 31.