Active noise control system

• Main Authors: NGUYEN QUOC HOAI, FUNG ERIC, WATSON ERIC TRACY, NAGORSKI ARKADIUSZ BARTLOMIEJ
• Format: Patent
• Language: Chinese; English
• Published: 28.11.2017
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; BLASTING; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; SOUND-PRODUCING DEVICES; STEAM ENGINES; WEAPONS

A system includes an Active Noise Control (ANC) module unit configured to be installed within an air intake or exhaust of a power generation unit. The ANC module unit includes an ANC housing shaped to fit within the air intake or exhaust, an ANC core configured to be secured within the ANC housing, which includes a microphone configured to detect a sound generated by the power generation unit, a control board configured to control the noise-canceling sound based on the sound signal from the microphone and a set of pre-determined noise reduction transfer functions, and a first speaker configured to deliver a first noise-canceling sound to the air intake or exhaust. 种系统包括构造成安装在发电单元的空气进入口或排气口内的主动噪音控制(ANC)模块单元。ANC模块单元包括成形为装配在空气进气口或排气口内的ANC壳体、构造成装固在ANC壳体内的ANC核心，其包括构造成探测由发电单元生成的声音的麦克风、构造成基于来自麦克风的声音信号和组预定噪音降低传递函数来控制噪音消除声音的控制板，以及构造成将第噪音消除声音输送至空气进气口或排气口的第扬声器。