PROBLEM TO BE SOLVED: To provide an acoustic device for vehicle that suitably reduces influence of wind noise.SOLUTION: An acoustic device for vehicle comprises: sound information acquisition means 110 for acquiring information on sound around a vehicle; first high-pass filter means 130 for performing high-pass filter processing based on a first cut-off frequency on the information on sound to output a pre-processed signal; wind speed estimation means 150 for estimating wind speed corresponding to wind noise included in the information on sound, on the basis of the degree of agreement of components in frequencies equal to or lower than the first cut-off frequency between the pre-processed signal and a previously stored wind noise sample signal for each wind speed; cut-off frequency setting means 160 for setting a second cut-off frequency on the basis of the wind speed; and second high-pass filter means 170 for performing high-pass filter processing based on the second cut-off frequency on the information on sound to output a wind noise reduction signal in which the wind noise has been reduced.SELECTED DRAWING: Figure 1

    【課題】風ノイズの影響を好適に削減する車両用音響装置を提供する。【解決手段】車両用音響装置は、車両周辺の音情報を取得する音情報取得手段110と、音情報に対して第1カットオフ周波数に基づくハイパスフィルタ処理を行い、前処理済み信号を出力する第1ハイパスフィルタ手段130と、前処理済み信号と予め記憶している風速毎の風ノイズサンプル信号との、第1カットオフ周波数以下の成分の一致度に基づいて、音情報に含まれる風ノイズに対応する風速を推定する風速推定手段150と、風速に基づいて、第2カットオフ周波数を設定するカットオフ周波数設定手段160と、音情報に対して第2カットオフ周波数に基づくハイパスフィルタ処理を行い、風ノイズを削減した風ノイズ削減信号を出力する第2ハイパスフィルタ手段170とを備える。【選択図】図1


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    Title :

    ACOUSTIC DEVICE FOR VEHICLE


    Additional title:

    車両用音響装置


    Contributors:

    Publication date :

    2017-02-23


    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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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