声学

声学设计软件EASE应用研究

Research of Applying Acoustics Software EASE

潜救信息测量系统包括位置测量系统：差分GPS测量系统、声学测位系统；

The measure system of rescue information has the position measure system : difference GPS measure system , acoustics measure system ;

Fe3Al/Al2O3陶瓷复合材料承载条件下的声学特征

Acoustic features of fe_3al / al_2o_3 composite under loading condition

RTKGPS在超短基线声学定位系统安装校准中的应用

Calibration of Ultra Short Baseline Acoustic Positioning System Using RTK GPS

利用HMM嵌入训练方法建立汉语电话连续语音声学模型

Modeling For Chinese Continuous Telephone Speech Using HMM 's Embedded-Training Method

基于DIS的水声对抗声学仿真系统设计

Design of DIS-based Underwater Acoustic Countermeasure Simulation System

计算气动声学问题和典型CFD问题的目标和特征之间都有本质的不同。

There are intrinsic differences between the characteristics and the objectives of computational aeroacoustics problems and typical CFD problems .

其次通过分析聚氨酯（PU）的透声和降噪机理，讨论了PU的声学性能；

Then the acoustic properties were discussed by analyzing the mechanism of minimizing flow noise while maximizing transmission of signal .

目的（1）应用经静脉声学造影间歇二次谐波成像（SHCI）结合声学定量（AD）技术评价正常移植肾血流灌注的可行性。

Objective To evaluate the clinical value of second harmonic contrast ultrasound ( US ) imaging and acoustic densitometry ( AD ) by comparing perfusion of renal allograft .

基于PMC方法的鲁棒声学模型研究

Noise Robust Acoustic Model Research Based on PMC

通过搜索每个lattice，从中提取所有音节和相邻音节对的声学分来形成语音文档的特征向量。

Extracting the acoustic score of syllable and syllable-pair from every spoken document by searching every syllable lattice of spoken documents to form the feature vectors of spoken documents .

通过对仿真出来的信号进行功率谱分析与DEMON谱分析，该仿真能较好地体现舰船辐射噪声的基本声学特征。

The Simula lion can reflect typical acoustic characteristics of ship-radiated noise by processing and analyzing the simulated signal .

DTS相干声学编码

DTS Coherence Acoustic Encoding

对于阻抗表面球，物理声学方法和严格解的比较表明，物理声学方法仍然是高Ka值时的一种很好的近似方法。

For the impedance sphere , a comparison between the physical acoustic method and the exact solution shows that the physical acoustic method is still a good approximation for the higher ka values .

目的探讨应用超谐波声学造影和声学密度定量（AD）技术，定量评价异体移植肾急性排异反应时皮质血流灌注的价值。

Objective To evaluate the value of using ultraharmonic contrast imaging ( UHCI ) and acoustic densitometry ( AD ) technique to quantify cortex blood perfusion of acute rejection in renal allograft .

为解决某国产轿车的强烈的车内噪声，进行了该轿车的空腔声学模态分析，使用ANSYS有限元分析软件得到其声学模态频率和振型。

With the help of ANSYS finite element analysis software , the acoustic pressure response cavity of a homemade passenger car with acoustic fluid - structural coupling has been studied .

超声组织定征（UltrasonicTissueCharacterization，UTC）技术是通过检测组织的声学参数来定量描述正常和病理组织的物理（声学）特性。

Ultrasonic tissue characterization is based on the principle of ultrasonic backscatter , and quantitatively describes the physical ( acoustic ) characteristics of normal and abnormal tissue by detecting the acoustic parameters .

并分别通过声学四端网络和GT-POWER验证了该假设的正确性。

The assumption is further proven by the acoustic four-terminal network and GT-POWER .

评价厅堂音质的混响时间T60和计算公式是上世纪初W·C·赛宾教授（WCSabie）提出来的，在此以后，混响时间一直是室内声学中的一个最重要、最稳定的指标。

Reverberation time T ( 60 ) and the calculation formula used to evaluate the hall timbre were advanced by professor W. C. Sabie last century .

基于ODEON软件仿真的电影院观众厅声学特性研究

Research of Acoustic Characters of Cinema Auditorium Based on ODEON

其次，介绍了MP3音频压缩标准所使用的子带编码、心里声学模型、自适应窗口切换、哈夫曼编码、比特池等关键技术。

Secondly , introduces MP3 audio compress standard including subband filter bank , psychoacoustic model , adaptive window switch over , Huffman coding , bit reservior , etc.

利用计算机语音工作系统（CSL）对所收集的录音资料进行语音声学特点分析。

Using a computer speech lab ( CSL ) to the recording of data collected for voice acoustic characteristics analysis .

建筑声学设计软件ODEON及其在工程上的应用

Architecture Acoustic Design Software ODEON and Its Engineering Application

建筑声学软件ODEON低频性能分析

Low Frequency Performance of the Building Acoustics Software ODEON

方法23例原发性肝癌行间歇二次谐频声学造影，间歇成像由心电图R波触发，触发间隔为1～2个心动周期。

Methods Twenty three cases of HCC were examined with intermittent second harmonic contrast imaging ( ISHCI ), the intermittent imaging were triggered by R wave of electrocardiogram ( ECG ) in the interval of 1 or 2 cardiac cycles .

目的：评价间歇二次谐波、脉冲反转显像心肌声学造影（MCE）对冠心病的诊断价值。

Objective : To evaluate prospectively clinical application of myocardial contrast echocardiography ( MCE ) in coronary artery disease ( CAD ) .

基于这一研究结果，在计算和实验的基础上利用Helmholtz共振腔对空滤器的声学特性进行了改进，改进后的空滤器对降低车辆进气侧通过噪声有很好的作用。

The optimization of the air-in filter acoustic performance by Helmholtz resonator based on calculation and experiment has effect on the decrease of pass-by noise .

声学多普勒海流剖面仪（ADCP）是最近十几年来迅速发展起来的一种新型海流计。

Acoustic doppler current profiler ( ADCP ) is a current measurement device of new generation rapidly developed in the past decade .

介绍了声学有限元法和有限体积法的基本原理及相应的商业软件SYSNOISE和FLUENT。

The fundamental theories of acoustic finite element method and finite volume method , as well as the related software SYSNOISE and FLUENT are introduced .

目的采用声学定量技术对慢性二尖瓣反流患者进行检测，旨在评价二尖瓣替换术（MVR）保留瓣下结构对左心舒缩功能的影响。

Objective To study the effects of mitral valve replacement ( MVR ) with or without preservation of subvalvular apparatus on left ventricular function .