会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • 적응형능동소음제거장치
    • 自适应控制类型的主动噪声衰减装置
    • KR100133259B1
    • 1998-10-01
    • KR1019940005441
    • 1994-03-17
    • 가부시끼가이샤 도시바
    • 사루타스스무세키구치야스유키
    • G10K11/16
    • G10K11/178G10K2210/112G10K2210/3017G10K2210/3045G10K2210/3049
    • An active noise attenuating device includes a first microphone (22) located in a propagation path (21) of noise, a loud speaker (23) located downstream from the first microphone (22), a second microphone (24) located downstream from the loud speaker (23) for receiving sound, and an operational unit (26) for executing an operation on the basis of a detection signal from the first microphone (22) to generate a control signal supplied to the loud speaker (23) so that a sound interfering with the noise is produced. An operational factor of the operational unit (26) is controlled by an adaptive controller (33) on the basis of the detection signal from the second microphone (24) so that an amount of noise attenuated by the sound produced from the loud speaker (23) is rendered maximum. A transfer characteristic of a transfer path between the loud speaker (23) and the second microphone (24) is identified on the basis of the detection signals generated by the second microphone (24) when a sound represented by a periodical identifying signal is produced in a plurality of periods. An operational factor of the adaptive controller (33) is adjusted by an adaptive control identifying unit (40) on the basis of the identified transfer characteristic.