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。
To improve the accuracy of acoustic logging data acquisition, a FIR filter that can implement in FPGA was designed through the using of MATLAB.
为了提高声波测井数据采集的精度，利用MATLAB设计了一种可以在FPGA中实现的FIR滤波器。
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。
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.
从声波干涉的基本原理出发，通过数字延时线的简化分析，说明了多级台阶反射声的叠加对声波频率产生的梳状滤波效果。
According to the data characteristics of acoustic logging, Hanning window was selected to design the filter. The filter coefficients were quantized following the FPGA's characteristics.
根据声波测井数据特点选取汉宁窗设计滤波器，根据FPGA的特征对滤波器系数进行了量化。
The radiation noise by the coupling effect of the filter's case and the interior acoustic chamber is computed when the air filter is excited by the simulated engine force.
计算空气滤清器在模拟发动机激励下，壳体结构与空气滤清器内部声腔耦合产生的辐射噪声。
Our design USES an adaptive digital filter with IMC arrangement to optimally cancel unwanted acoustic noise in the headset.
采用IMC控制器结构，设计自适应数字滤波器消除耳罩内的噪声。
In this paper, a Chinese isolated word recognition system is established based on the source-filter generation model combined with the acoustic characteristics of whispered speech.
本文根据耳语音信号发音模型，结合耳语音的声学特性，建立了一个汉语耳语音孤立字识别系统。
By analysing the actual room acoustic environments, this paper presents a novel algorithm for acoustic echo cancellation, it can dynamically change the length of the adaptive filter order.
通过对回声抵消的实际应用环境进行分析，提出一种新的动态改变自适应滤波器阶数的算法。
We made the acoustic-optical tunable optical performance monitor (OPM) with the filter of acoustooptic tunable filter (AOTF) successfully by using the integrated optical technique for the first time.
我们采用集成光学工艺，首次制成了以声光可调谐滤波器（AOTF）为分光元件的光信道监测仪。
Surface Acoustic Wave Filter (SAWF) is a sort of analogue device for signal processing.
声表面波器件是一种新型的模拟信号处理器件。
Surface Acoustic Wave Filter (SAWF) is a sort of analogue device for signal processing.
声表面波器件是一种新型的模拟信号处理器件。
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