octave band
英 [ˈɒktɪv bænd]
美 [ˈɑːktɪv bænd]
网络 倍频程; 倍频带; 倍频程带; 八音带; 倍频程频带
双语例句
- After calibration, octave band measurements were taken at each of the listening locations for ambient and pink noise levels from each of the sound output locations.
校准后，倍频程测量结果采取的从声音输出的每个地点的环境和粉红噪音水平聆听每个地点。 - Typical view of a1:3 Octave Band Analysis using Acoustic Toolbox software.
一个典型视图1：3倍频带声工具箱分析中的应用软件。 - Octave Band BAW Microwave Delay Line
倍频程宽带声体波微波延迟线 - The freedom degree of vehicle is determined by using fuzzy comprehensive judgment with the parameters of vehicle model and the RMS of driver seat in 1/ 3 octave frequency band form as factor sets and appraisal sets respectively.
以整车模型的参数作为因素集，以驾驶员座椅1/3倍频带加速度均方根值作为评价集，用模糊综合评判确定了整车振动模型的自由度，并用试验验证了该方法的正确性。 - Secondly, through wavelet packet analysis, the bearing vibration signals are decomposed into a series of time-domain signals, each of which covers a specific octave frequency band. The signals covering the high-frequency resonance frequency-band are automatically extracted and reconstructed.
然后利用小波包分析可以在全频带内把信号分解到相邻的不同频带上的特性，对滚动轴承的振动信号进行小波包分解，自动提取共振频带上的信号并进行重构。 - Adjustment of guidance limit values given in ISO 2631/ 1 may have to be considered. Ths paper takes a statistical difference of a axis over-all weighted acceleration and the greatest single third octave band weighted acceleration on 87 axes in 29 vehicles.
本文统计了29辆次机动车辆87个轴向全频域计权加速度级与对应轴向最大一个1/3倍频程带计权加速度级的差值，求出平均值作为调整值。 - This paper describes the calibration method of a reference sound source. A set of calibration data for a reference sound source type 4204 of A-power level and sound power level in third octave band frequencies in semianechoic room are given.
本文描述了在半消声室内标定噪声源的方法，并给出一台B＆K4204型参考声源的A声级和1/3倍频程带声功率级的校准数据。 - The theoretical and experimental results are presented, which show the low axial ratio and low loss characteristics over octave frequency band of the polarizer.
给出理论和实验结果，证明了这种四层曲折圆极化器可以在倍频程范围内得到良好的低轴比、低损耗特性。 - The 3 octave filter in this system can reach 0 level precision, according to < Verification Regulation of Octave-Band and one-Third-Octave Band Filters> JJG 449-2001.
本系统的1／3倍频程滤波器按照国家计量检定规程《倍频程和1／3倍频程滤波器检定期程》JJG449-2001检定，性能指标可以满足0级精度要求。 - In the FFT based algorithm for octave CPB spectrum, the frequency leakage causes big calculation errors in each frequency band.
基于FFT的倍频程CPB谱实现算法中，由于FFT变换时频谱泄漏的影响，导致倍频程CPB谱许多频段出现较大的计算误差。 - The 4 experimental groups were immersed in the noise of 120 dB Lp, 1/ 3 octave 4 kHz narrow band noise for 4 h.
实验组暴露于120dBLp及1/3倍频程的4kHz窄带噪声中4小时。 - In order to overcome the above problem, the paper puts forward a novel wavelet transform based algorithm for octave CPB spectrum which can effectively reduce the calculation errors in each frequency band.
为克服上述基于FFT的CPB谱实现算法的不足，本文提出了一种基于子波变换的倍频程CPB谱的实现方法，该方法有效地提高了倍频程CPB谱各频段的计算精度。 - Describes the real frequency technique for matching small antennas in two octave band which improves the receiving efficiency of the antennas.
然后采用了实频技术法对小型天线在两个倍频程的宽带范围内进行匹配，从而提高了小型天线的接收效率。 - Experiment on a simplified model analogous to the outer hull of a ship is also carried out to compare the averaged transmission loss in eight 1/ 1 octave band at two double-corner structure with and without double blocking masses attached respectively.
本文利用一个模拟船舶机舱段的简化多转角结构模型进行了测试，比较了附加或者无阻振质量的双转角结构在八个1/1倍频带上平均的结构声能量传递损失。 - A lot of complex functions, such as 1/ 3 octave analysis, sound power, tonality narrow band analysis, vibration spectrum, have been solved.
解决噪声1/3倍频程、声功率、音调窄带谱，振动频谱等复杂功能的在线分析与处理。