An improved algorithm is proposed here which include:(1) GLR variance based threshold adaptive algorithm is to improve the threshold selection approach in speaker based speech segmentation under various acoustic environments; (2) BICs Detection Ability is referred to determine when BIC is effective; (3) Besides to verify the candidate segmentation points, BIC is used to calibrate their bias caused by GLR variance.
提出一种改进的基于说话者的语音分割算法，对GLR和BIC相结合的算法作进一步的改进：(1)基于GLR距离方差的自适应阈值调整算法改进了不同声学特征下基于距离的语音分割算法中的阈值选取方法；(2)引入BIC可测度概念来度量其适用范围；(3) BIC信息准则校准非冗余的候选分割点的偏差。
This paper introduces the theory of acoustic emission detection and its application in ultrahigh-pressure vessel and evaluates the results as well.
介绍声发射检测的原理和声发射检测在超高压容器上的应用，并对其结果进行评
This paper constructs a signal processing unit based on the general data acquisition device PCI-6052 of National Instruments Corp., and develops a flexible design method for acoustic transponder/responder system with improve ambient noise estimation and pulse detection technology. The responder realizes signal detection and pulse reply functions under noise background, and has been applied successfully in undersea acoustic survey experiments.
本文以NI公司的PCI-6052采集卡和工控机构成信号处理模块，设计出了一种可灵活配置的水声应答系统(ESRAE，Extensible Sound Responder for Acoustic Experiments)，通过环境噪声电平的跟踪估计和脉冲判决技术实现了复杂海洋条件下脉冲检测、回发功能，并在海洋水声信道测量试验中得到了成功的应用。
Investigators at Aerojet-General Corporation and other organizations have applied acoustic emission with multiple transducers, and triangulation techniques to the detection and location of flaw s in large structures
通用航空喷气公司和其他机构的研究人员用多路传成器和三角定位技术将声发射应用于大型结构的袭纹检测与定位工作中。
In this paper, the principle and basic method of acoustic emission detection of power transformer partial discharge are introduced along with the features of the AE detection system of Physical Acoustics Corp.
介绍了运用声发射检测技术进行变压器局部放电检测的工作原理和基本方法。以及美国物理声学公司声发射检测系统的特点。以增城变电站2台大型变压器的局部放电声发射检测试验为实例。
In this study, we evaluated a new acoustic monitoring systemfor the detection of OLI.
在此项研究中，作者评估了 OLI 的新的声学监测系统。
These findings indicate that the principles of fisheries acoustics as well as the current acoustic instrumentation and methodology can also be used for Enteromorpha prolifera detection, and that hydroacoustics can be used as an available and effective technique for rapid monitoring of submerged Enteromorpha prolifera.
结果证实渔业声学原理和现行渔业声学仪器、方法同样适用浒苔的探测，水声技术可成为下沉浒苔快速监测的有效手段。
Based on analysis of acoustic and perception characteristics of whispered mandarin speech, a tone detection method using ant colony clustering is proposed.
提出了一种基于蚁群聚类神经网络的汉语耳语音声调识别方法。
Reflection and refraction of acoustic waves at a sediment interface is an important problem for seafloor scattering, bottom reverberation and the acoustic detection of objects.
声波在海底界面的反射和透射是海底散射、海底混响、海底目标探测的重要问题。
The application of time delay estimation in passive acoustic detection and location was studied.
研究了时延估计算法在被动声测定位中的应用，提出了一种改进的基于最大似然权函数的广义互相关时延估计算法。
Surface acoustic wave devices coated with selective polymer as chemical sensors become popular in the detection of a variety of organic gases.
表面声波元件其表面上所涂布选择性的聚合薄膜可作为化学感测器，并运用在感测不同有机气体。
Underwater acoustic imaging is widely utilized in underwater investigation, especially in seabed mapping, target detection and classification.
水下声成像技术在水下探测尤其是海底测绘、海底物体探测与识别的应用中发挥着重要作用，具有广泛的应用前景。
This paper deals with the target detecton, identification, locating and tracking of the acoustic detection system as well as signal processing of the acoustic sensor array.
由于战场传感监视系统及反直升机、反坦克等武器系统的需要，作为无源探测的声探测技术受到了世界各国的普遍重视。
The nondestructive testing techniques such as acoustic emission technique, magnetic flux leakage detection, ultrasound phased array inspection, Time|of|flight diffraction and ultrasound guided wave techniques were summarized in this paper.
阐述了近年来涌现的声发射检测、漏磁检测、相控超声检测、超声衍射时差检测、超声导波等先进的无损检测技术。
The following are the expressions for the mean pressure set up at the detection plate and for the time of the signal to progagate from the radiator to the detector:这里是1个公式, 省略） where Re is the real part of the expression appearing within the braces, 0 is the density of the medium, vo is the amplitude of the vibrational velocity, c is the speed of sound in the medium, d2 = I +(r/zcos 8, z is the distance between the emitting and receiving plates, B is the angle between the axis of the acoustic channel and the axis of the tube, r = vro/c, v is the flow speed of the fluid, d is the diameter of the pipe, m is the circular frequency, k is the wave number, where a is the radius of the plate (this is taken as the same for the emitting and receiving plates for simplicity, but there is no difficulty in discussing plates differ~mg in radii), ,~ is the vibrational frequency of the emitting plate, and The triple sums in the expressions for N~ and N2 may be neglected if the flow speed is low, since the contributions for these become negligible.
以下的表情为代表的压力设置在检测板甲，手持骑枪和时间的信号 progagate从散热器排出到检测器(这里是1个公式、省略)。在什么地方才是真正的出现在背带，表现为0密度的吗当时的媒介的振幅振动速度、c是声音的速度中、d2 =我+ r/z，8、z是距离的发射和接收板、B之间的角度对声信道和轴轴管，r = vro/c，v的流体的流动速率公式，d 管直径的圆频率，m，凯西是波数公式* n，一个是半径的板(这是作为相同的发射和接收吗为了简单，但板板是毫无困难地讨论不同半径)、镁-，~的振动频率的发光，。总结了三倍的表达方式和N2 ~能忽略的流量速度低，因为这些变得微不足道的贡献。
This paper introduces an underwater acoustic/optical integrated imaging system, which individual uses the DSP core and ARM core of the OMAP3530 processor to realize the multi-subarray amplitude-phase united detection method and optical camera image collection for getting the estimating the depth of the sea and the optical information of the focus area, uses the ARM core to receive the GPS and other parameters from the UART and then realizes the three-dimensional acoustic reconstruction of the seafloor with OpenGL | ES library in PowerVR core of the OMAP3530 processor, uses the QT embedded designed man-machine interface to realize the acoustic and optical image information real-time displaying, relies on the network uploading the data to the mother-ship.
本文主要研究基于OMAP3530的水下声/光一体化成像系统，利用DSP核和ARM核分别实现多子阵幅度-相位联合检测算法和光学摄像头的图像采集得到水下目标区域估计和焦点区域的光学图像信息、利用ARM核接收GPS与横摇、纵摇等参数、在PowerVR核上使用DSP核计算出的深度值依靠OpenGL | ES实现声学回波信息的三维成像、并利用QT/E设计的人机交互界面对声学和光学成像信息进行实时显示。
Passive acoustic detector is an important part of the acoustic detection system. As the modern battlefield environment is getting more and more complicated, passive acoustic detector has attracted more and more people`s attention, because of its superior character.
空中目标声信号检测器是声探测系统中的重要组成部分，随着现代战场环境的日趋复杂化，被动声信号检测器以其自身独特的优势越来越受到人们的重视。
For passive acoustic detection at a short distance, a ship should be considered as a volume sound source, there are three highlight sound-radiated positions along the fore-and-aft direction of the ships, propeller, propulsion machinery and auxiliary machineries.
在近程探测条件下，舰船应被视为体积声源，沿舰船艏艉方向分布有三个明显的声辐射亮点部位即螺旋桨部位，主机部位和辅机部位，这就是舰船的三亮点模型。
SAW sensing detection technique has good future applications..This dissertation begins with acoustic principle of SAW, and gives a brief introduction of SAW sensing mechanics. Materials and fabrication technology of SAW sensor are also involved.. More attention is paid to analysis of SAW IDT simulation, including δ function model, equivalent circuit model and Coupling-of-Modes model, and perturbation effect theory on sensor surface as well. Depending on these theories and research, we develop a dual channel shear-horizontal surface acoustic wave sensor based on 36°-YX LiTaO_3 substrate with 52 MHz and 104 MHz center frequency, and describe the SAW senor interface circuit design in detail.
本文从声表面波的声学原理入手，简要介绍了声表面波传感器的传感机理，及其制作的相关材料和工艺，重点从δ函数模型、等效电路模型和耦合模模型入手分析研究了声表面波叉指换能器的建模仿真，声表面波传感器的界面扰动效应理论，在以上理论研究的基础上，设计制作了以36°-YX LiTaO_3单晶为基底的52 MHz和104 MHz双通道水平剪切声表面波传感器，详细论述了声表面波传感器的高频接口设计技术。
This includes the surface mounted and embedded optical fibre damage detection system, the use of fiber optic strain sensors for monitoring acoustic emission from within composite specimens, and a fiber optic strain rosette for maping the strain tensor within a composite structure.
介绍了光纤传感器在飞行器结构上的应用，包括表面贴装与内埋光纤损伤探测系统，内埋的监测复合材料内部声波辐射的光纤应变传感器及测量复合材料内应变张量的应变计。