抄録
Active noise control (ANC) system with extremely high sampling frequency such as 100kHz was proved to be effective for reducing the distance between the reference microphone and the secondary source, by using Field Programmable Gate Array (FPGA), in our previous works, long impulse responses were also realized by using parallel computing technique of FPGA and the above compact ANC system was proved to be effective for low frequency range down to 200Hz. In this study, this ANC system was applied to Active Acoustic Shielding (AAS). This AAS system was constructed wish many AAS cells set in an array and it can attenuate the sound passing though an open window.
