峰值频率 meaning in English
peak frequency
Examples
- In frequency domain it is different in the amplitude and main peak frequency range
五种害虫声信号的峰值频率和主要频域范围也存在差异。 - The correlation between broad - band spectral index and peak frequency for xbls and fsrqs
和平谱射电类星体间峰值频率与光谱指数的相关性分析 - In the end , a new reliale indicator , energy peak , is found to used to estimate damage . its three parameter : peak time , peak frequence and peak power are also evaluated . this study improves monitoring equipment in intelligence , low power dissipation and security
作者最后利用脊髓在受不同程度损伤下的脊髓诱发电位的时频分布图，比较时频分布和时域上的各参数的变化，找到了新的损伤判定的特征指标：峰值能量,及其三个参数:峰值时间、峰值频率和峰值功率。 - Due to existing signal processing technology ’ s shortage such aslow measurement , narrow measurement range precision and other poor performance , we introduced a high - precise signal processing technology : firstly , to get power spectrum with hanning windowed welch modified periodogram , search its peak value frequency ; secondly , to apply zooming analysis via goertzel algorithm ; at last , to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology , we designed a signal processing scheme , and developed a signal processing system . the running result showed high performance , verified the feasibility and reliability of the highly precise signal processing technology introduced . in a word , the technology improved ldv ’ s performance such as measurement precision , measurement range , dynamic response time 。 and it will have a wide application foreground
针对存在的缺点,本文提出了一种应用于激光多普勒测速的高精度信号处理技术,即首先利用加hanning窗的welch修正周期图算法得到信号功率谱,搜索其谱峰值频率,接着利用goertzel频谱细化算法对搜索的谱峰进行细化分析,再引入能量重心频谱校正算法对细化后的谱峰进行校正分析,从而将离散频谱分析算法、频谱细化算法和频谱校正算法三者有机结合起来,充分发挥各自的优点:通过加hanning窗的welch修正周期图算法快速得到功率谱及峰值频率,通过goertzel算法获得分析频带的高分辨率频谱,然后通过能量重心校正算法对细化后的频谱进行高精度校正,这样不仅保证了算法的高效性,而且大大提高了分析的精度。 - These researches provide us a basis for forecasting the pests in grain in earlier stage , accurately utilizing pesticides , improving the efficiency of prevention and reducing the loss of stored grain . the sound absorption properties of various types and thickness of grain are measured by means of the standing wave tube technique . the following conclusions can be drawn : for the same thickness the larger grains has a smaller sound absorption coefficient than the smaller grains
为了有效地研究储粮害虫所产生声信号在各种粮食中的传播特性，本文采用驻波管法，对十一种不同种类粮食在不同堆积厚度情况下的吸声性能进行了实验研究，粮食吸声特性与其颗粒的大小、形状、排列方式及粮食堆积厚度等有关，存在一定的规律，得出如下结论：同一厚度下，颗粒大的粮食较颗粒小的吸声性能差，颗粒由大到小，吸声系数峰值频率向低频方向移动；球形颗粒粮食较长形颗粒吸声性能差。