PROBLEM TO BE SOLVED: To provide a technique capable of changing a range where sound is easily heard in an ultrasonic wave output device that outputs ultrasonic waves.SOLUTION: An alarm system includes a plurality of parametric speakers and a control unit. The parametric speakers are arranged side by side in a horizontal direction on a vehicle and configured to transmit audible sounds generated by ultrasonic waves with the same phase into sound field regions representing corresponding preset regions. The control unit is configured to change ranges of overlapped regions representing regions where a plurality of sound field regions are overlapped according to an external command at S160.SELECTED DRAWING: Figure 3

    【課題】超音波を出力する超音波出力装置において、音が聞こえやすい範囲を変更できるようにする技術を提供する。【解決手段】警報システムは、複数のパラメトリックスピーカと、制御部とを備える。複数のパラメトリックスピーカは、車両において水平方向に並べて配置され、同位相の超音波にて生成された可聴音をそれぞれ予め設定された領域を表す音場領域内に送信するように構成される。制御部は、S160で、外部指令に応じて複数の音場領域が重複する領域を表す重複領域の範囲を変更するように構成される。【選択図】図3


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    Title :

    ULTRASONIC WAVE OUTPUT DEVICE


    Additional title:

    超音波出力装置


    Contributors:

    Publication date :

    2018-08-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein



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