声场

消声室自由声场的CAD及其某些结果的讨论

CAD of free sound field in an anechoic room and some of its deductions

室内扩散声场的MonteCarlo模拟方法

The Monte Carlo method for simulating diffuse sound field

应力波在固体中的传播，根据其条件可视为声场或超声场的一部分。

The propagation of stress waves in solids can be considered as a part of the field of acoustics or ultrasonics depending on the conditions .

Ganoderma内。驾驶室声场的研究

Ganoderma . Study on Interior Acoustic Field of Vehicle Cab

HIFU聚焦探头声场功率测量的凹锥面反射靶设计分析

Design of concave cone reflector for HIFU ultrasonic transducer power measurement

利用HRTF，即头相关传输函数，能够营造出一个3D的声场环境。

Head Related Transfer Function ( HRTF ) can build 3D sound field .

ARMA模型在柱状声场反演问题中的应用

Application of ARMA Model to the Inverse Problem of a Cylindrical Acoustic Field

目的：用实验方法分析非脱气水对HIFU探头声场分布的影响。

Objective : To investigate what non degassed water influence on HIFU probe ultrasonic field .

使用不同的编程佩戴ESPrit3G进行声场（啭音）听阈测试，结果有显著差异（P0.01）；

Sound field hearing threshold measurements of warble tones in patients with ESPrit 3G using various programs showed significant difference ( P0.01 ) .

1组与使用ESPrit3G调试获得程序的2组的声场测试结果无差异（P0.05）。

The results of sound field audiometry showed no different statistically in the first group and the second group using programs from ESPrit 3G ( P0.05 ) .

用推迟势计算了脉冲波声场的声压公式，克服了Fourier分析中对频率求和的困难。

By Employing the retarded potential in calculating sound pressure in the pulse - wave sound field . difficulties of frequency summation in Fourier analysis can be overcome .

而声压通道采用PVDF压电薄膜作为敏感元件，以拾取水下声场中的标量信息。

A PVDF piezoelectric membrane is used as sensitive element for measuring the scalar pressure of the underwater sound field .

本文以边界元法为基础，联合使用Fortran和Visualc++自行开发了水下弹性结构辐射声场边界元计算系统软件。

Based on BEM , the system software for underwater sound radiation from elastic structures has been developed in this paper by using Fortran and Visual C + + jointly .

但运用最小二乘法重建管内声场时，协方差矩阵Q的最小特征值λmin对于矩阵奇异性的影响是十分敏感的。

When adopting least square method to reconstruct sound field in the tube , the minimum characteristic value is very sensitive to examination of the singular condition of the covariance matrix Q.

B.Dozier统计耦合模式方程，通过MonteCarlo数值模拟分析声速场随机变化所产生的声场起伏规律。

Monte Carlo simulation is used to analyze the sound field fluctuation induced by sound speeds random fluctuation with Dozier ′ s statistical coupled mode equations in a random ocean .

室内声场计算机模拟软件ODEON在声学设计中的应用

Use of the computer simulation software odeon in acoustical design

本文利用混响声场吸声系数α、立体角、平均自由程及壁面吸收声能等统计声学概念，用简单方法导出混响声场吸声系数α与统计能量分析（SEA）损耗因子η之间的关系。

Relation between acoustical absorption coefficient α and loss factor η in reverberant field with statistical energy analysis ( SEA ) was derived using concise statistical acoustical concepts , such as acoustical absorption coefficient α, three-dimension angle , mean free path and surface absorption energy .

提出空间声场分离技术，突破了近场声全息（NAH）的应用局限。

Sound field separation technique has been proposed , which overcomes the limitation on applications of near_ field acoustic holography ( NAH ) .

方法应用聚偏氟乙烯（PVDF）压电传感器，对经腹彩色多普勒辐照的孕鼠进行宫内瞬态声参数及声场参数的测量。

Methods The transient sound parameter and sound field parameter inside the uterus in pregnant rats irradiated by transabdominal color Doppler were measured with polyvinylidene fluoride ( PVDF ) piezoelectric sensor .

如果你使用高端耳机，如T1，这两样东西都会在你面前扔出一个宽广且可信的声场。

With a " superior " headphone that uses angled driverssuch as the ALO Recabled Beyer T1 , they both can throw a wide and believablesoundstage in front of the listener .

南中国海实验cnoidal波演变规律及其引起的声场起伏

Evolving characteristic of cnoidal wave and sound field fluctuation induced by it in the South China Sea Experiment

HIFU聚焦声场分布参数不仅是HIFU系统最关键的内容，还是HIFU治疗设备安全高效的重要指标。

Distributions and acoustic parameters of HIFU Field are not only the key part of the system , but also an important index to safety and validity of a HIFU therapy facility .

尾迹流中的Lighthill应力张量能在远场产生声场。

The Lighthill stress tensors in the wake flows could generate sound field in the far field .

HIFU性能的好坏，治疗效果的优劣，与聚焦声场分布有着密不可分的关系。所以对HIFU声场测量是研究聚焦超声换能器的重要环节。

The capability and effect of HIFU have a tight relationship with the acoustic field distributions . So the measurement of HIFU acoustic field is the significant part of focusing ultrasonic transducer researching .

作者用有限元法模拟了LCR波在钢轨中传播的声场分布，并且对钢轨中LCR波的传播作了实验。

The field distribution of an L_ ( CR ) wave transmitted in rails is simulated , and experiments of L_ ( CR ) wave transmission are conducted .

随后，为了能在实验台上实现可增益的轻核聚变，对于处于强超声场中的高温压缩含DT气泡，我们也探讨了采用飞秒级强脉冲激光快点火的可行性。

In addition , in order to attain table-top controllable nuclear fusion , we show theoretically that the feasibility for applying femto-second intense laser pulse realizing fast ignition to the pre-compressed hot bubble in an acoustic field .

本文提出的声场分离技术利用波场的外推理论，建立起在波数域声场分离的公式，然后通过二维Fourier逆变换，便得到了全息面一侧声源产生的声压，从而达到声场分离的目的。

The technique builds the sound field separation formula in wave number domain according to the wave field extrapolation theorem , and the sound pressure caused by sources on one side of holographic plane can be obtained as expected by taking two-dimensional Fourier transform of the formula .

结果与结论：在较低的驱动电压（小于300V）下，声场分布曲线比较平滑，接近理论值；

Results and Conclusions : Ultrasonic field distributed curve is smooth and approaches theory value in lower driving voltage ( less than 300V ) .

电偶极近似条件下电磁相互作用的Feynman路径积分描述但是，这种换能器的辐射声场不能直接利用Helmholtz积分法进行解析求解。

The Feynman path Integral Formulation of the Interaction of Electromagnetic Radiation in the Electric Dipole Approximation However , the sound field of such transducer can not be solved analytically by the Helmholtz integral formulation .

根据海洋声场与内波场的关系，建立了内孤立波特征参数反演模型，结合从SAR图像中提取的孤立子内波部分参数，利用声传播损失的信息进行孤立子内波振幅的反演。

A characteristic parameter inverse modeling of internal soliton was established based on the relation between the ocean acoustic fields and internal waves . Combined with some parameters of internal waves obtained from SAR image , the amplitudess of internal solitons was inversed by the information of sound transmission loss .