It is shown that in the ANC system with IIR filter the acoustic feedback effect has been apparently abated.
结果表明,采用IIR滤波器结构的ANC系统,对声学反馈现象确实具有明显的抑制作用。
2
Compared with conventional tunable acoustic-optic filters the present filter offers more narrow bandwidth and faster tuning speed.
该滤波器与通常的声光可调滤波器相比,带宽更窄,调谐速度更快。
3
Based on principals of interference of acoustic waves and simplified digital delay-line, comb filter effect induced by superposition of reflections from steps is presented.