With the outer scale of turbulence increasing, the amplitude of low-frequency spectrum increases and the high-frequency is invariable.
随着等效湍流外尺度的增加，低频谱的幅值逐渐增大，高频谱保持不变。
MethodsAnalyze spectrum of the sample signal and propose the formula of common sample frequency in low speed.
方法分析了带通采样信号的频谱和规律，导出了低速采样频率的选取公式。
The utilization rate of licensed spectrum is very low in the time domain, frequency domain and space domain, while the unlicensed band is overcrowded seriously.
大部分授权频段在时域、频域和空间域的利用率很低，而公共频段出现了严重的频谱拥挤。
The ratio of the low frequency to high frequency components in HRV power spectrum(LF/HF) fluctuates with the change in the sleep stages.
HRV频谱中低频和高频成分的比值（LF/HF）随着睡眠深度的变化而波动。
Spectrum analysis showed that the main period of low frequency sea level variations at both coasts was annual, while that of sea level differences between the two coasts was semiannual.
谱分析显示，两岸的水位低频变化均以年周期为主，但两岸间的水位差却以半年周期为主。
This paper reports a 31 bit low frequency SAW programmable tapped delay line. It is a key device in signal processing of interference free spread spectrum communication system.
文章报道的31位声表面波低频可程序抽头延迟线是一种用于扩频抗干扰通信系统所用的关键信号处理器件。
The purpose of this project is to design a wide frequence band, fine frequency step, low phase noise and low spur synthesis sweeping source suited for the spectrum analyser.
本课题的目的是设计一个适用于该频谱分析仪的宽频率范围、精细频率步进、低相噪及低杂散的合成扫频源。
The vibrational modes and spectrum are very different if the free boundary condition is adopted, and the spectrum is divided into low, medium and high frequency branches.
若采用自由边界条件，则模花样和振动频谱完全不同，这时只能分为低频支、中频支和高频支。
High spatial frequency terms of the turbulent spectrum are sampled and low spatial frequency terms are revised using this treatment.
该算法既可对湍流的高频谱抽样，亦可对湍流的低频谱进行修正。
But the line located in the low frequency of ship noise spectrum has high intensity and stability. This fact provides new idea in estimating target motion parameters.
而处于舰船噪声低频区的线谱具有很高的强度和稳定度，这一事实为估计目标运动要素提供了新的思路。
The data of polar motion, rotation of the earth and atmospheric excitation function are analysed by the Auto-Regression power spectrum method, and their spectra at low frequency band are obtained.
本文用自回归功率谱方法分析了极移、地球自转和大气激发函数的资料，得到了它们的低频谱。
These low frequency spectrum lines are basically the harmonics of the rotor shaft frequency and the blade-passing frequency.
并且这些低频线谱基本上都是转子轴频和叶频的谐波分量。
The results based on electrochemical impedance spectrum showed that the real part at low frequency of carbon steel contracted after adding YC-1, the diameter of EIS increased.
交流阻抗研究表明碳钢在薄层电解液中的阻抗谱图成实部收缩的半圆，加入YC-1后半圆的直径增大。
In this paper, a real time power spectrum analyzer of low frequency random signal based on digital filters is introduced, and a design method of real time arithmetic is given.
文中介绍了基于数字滤波的低频随机信号实时功率谱分析仪的实现方法，并给出了实时算法的设计要点。
The single cylinder misfire can be also done by the frequency spectrum analysis of rotating speed fluctuation at both low and high speeds, but it can not be determined which cylinder is misfired.
利用瞬态曲轴转速波动进行时域分析可在低速时诊断出单缸熄火，在高速时由于波动的复杂性就难以做到。
From this spectrum, one or more low-frequency signal components that are characteristic of the sample being interrogated are identified.
从该谱上识别一个或多个表征该被询问样本的低频信号分量。
The generating of pseudo random sequence is one of the key subjects to realize the spread spectrum technique upgrade for BPC low frequency time code radio station.
伪随机序列的产生是实现BPC低频时码发播台扩展频谱技术升级的一个重要环节。
The hardware constitution of a low phase noise frequency synthesizer using AD9854 and the measured performances of system phase noise and spurious spectrum are presented.
给出了采用AD985 4芯片构成的低相噪频率综合源的硬件组成以及系统实测的相位噪声、杂散技术指标。
Because it is related to the magnitude of noise RMS voltage, the frequency characteristic of circuit and the power spectrum of noise source, the accuracy of measurement is quite low.
但由于与噪声电压的大小，网络频率特性及噪声源功率谱形式有关，故测量准确度较低。
Existing predominantly, in the Very Low frequency part of the radio spectrum that corresponds with the audio frequency range, we can experience this activity as audible sound.
尽管这种活动主要存在于无线电声音频率分区的超低频区域，我们还是能够通过听觉来捕捉到它。
This paper discusses the despread of low signal to noise ratio of the direct sequence (DS) spread spectrum signals using intermediate-frequency recirculation summation loop (IFRSL).
本文讨论了用中频积累法实现低信噪比直接序列扩频信号的解扩。
Then, multifractal analysis is performed for low frequency sub-band. The multifractal spectrum is used as the characteristic parameters to filter pixels which mark different scenery.
然后对低频子带进行多重分形特性分析，再将多重分形谱作为特征参量进行像素筛选，筛选出标志不同景物的像素点。
The 8590L is a low cost, but full-featured, frequency accurate RF spectrum analyzer designed to meet your general purpose measurement needs.
该8590L是一种成本低，但功能齐全，频率精确的射频频谱分析仪，以满足您的一般目的的测量需求。
The PMS-15 Sub-Woofer is a 15 "enclosure designed for the reproduction of the sub low frequency spectrum of sound with a very high quality reproduction."
进口工业网的PMS -15低音炮是15“外壳，对声音的低音频率具有高质量的还原作用。”
The method was Correlate search and FFT carrier detection, which could solve the problem of the capture of the spread spectrum code under the condition of low SNR and big frequency offset.
方案中提出了：相关搜索、FFT检测信号载波的方法，解决了低信噪比、大频差条件下扩频码的同步捕获难题；
MFCC can express speech spectrum more accurately at low frequency, so MFCC is a good method to express the spectral envelope in voice conversion;
MFCC可以更加准确地表示语音低频处的频谱包络，在语音转换中是一种很好的频谱包络表示方法；
MFCC can express speech spectrum more accurately at low frequency, so MFCC is a good method to express the spectral envelope in voice conversion;
MFCC可以更加准确地表示语音低频处的频谱包络，在语音转换中是一种很好的频谱包络表示方法；
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