PROBLEM TO BE SOLVED: To provide a noise control device which can effectively reduce noise having strong random nature.SOLUTION: A noise control device 10 includes: a first control part 1100 which outputs control signals for making a speaker 3a output the sound for reducing noise; a first characteristic circuit 1150 which generates a signal where transmission characteristics from the speaker 3c to an error microphone 2c is folded in the control signal output from the first control part 1100 to the speaker 3c; and a subtractor 1261 which subtracts the signal generated by the first characteristic circuit 1150 from the output signal of the error microphone 2c, and outputs the subtracted signal. The first control part 1100 generates the control signal for being output to the speaker 3a so as to make the output signal from the subtractor 1261 a reference signal and make the output signal of the error microphone 2a minimum, and outputs the control signal to the speaker 3a.SELECTED DRAWING: Figure 6

    【課題】ランダム性の強い騒音を効果的に低減することができる騒音制御装置を提供する。【解決手段】騒音制御装置10は、スピーカ3aに、騒音を低減するための音を出力させるための制御信号を出力する第1制御部1100と、第1制御部1100からスピーカ3cに対して出力される制御信号に、スピーカ3cからエラーマイク2cまでの伝達特性を畳み込んだ信号を生成する第1特性回路1150と、エラーマイク2cの出力信号から第1特性回路1150が生成する信号を減算し出力する減算器1261とを備え、第1制御部1100は、減算器1261からの出力信号を参照信号として、エラーマイク2aの出力信号が最小となるように、スピーカ3aに対して出力する制御信号を生成し、スピーカ3aに出力する。【選択図】図6


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    Title :

    NOISE CONTROL DEVICE AND NOISE CONTROL METHOD


    Additional title:

    騒音制御装置、及び騒音制御方法


    Contributors:

    Publication date :

    2016-05-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler



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