声学的

Norm on Acoustical Design and Measurement of Noise Barriers ...

1.1 本规范规定了声屏障的声学设计和声学性能的测量方法。

The creation of halls with this new listening impression needs a high degree of experience for architect and acoustician.

创作具有全新声学体验的厅堂需要建筑设计师和声学工程师的丰富经验。

The acoustic analysis by computer technique , aero-dynamic measurement and the examination by laryngoscopy are of value in the diagnosis and treatment of functional dysphonia.

采用喉镜、计算机声学分析和空气动力学检测方法获取喉部图像、嗓音声学及空气动力学特征有助于功能性发声障碍的分类、诊断及鉴别诊断，并为进一步选择合适有效治疗方法提供客观依据，因而这些检测方法在功能性发声障碍中有一定应用价值。

Objective To investigate the clinical feature, characteristics of acoustic and aero-dynamic peremeters of functional dysphonia contrasted with the normal adults and evaluate the value of acoustic and aero-dynamic measurements in the diagnosis and treatment of functional dysphonia.

目的 观察功能性发声障碍喉镜图像、嗓音声学特征及空气动力学变化，探讨喉镜检查、计算机声学分析、空气动力学变化在功能性发声障碍诊断、鉴别诊断、分类及治疗中的应用价值，初步建立功能性发声障碍临床诊断标准。

According to the theory of wave acoustics and ray acoustics,train is regarded as a moving limited line sound source and the mathematics model of sound field distribution is set up around the elevated railway.

根据波动声学和几何声学原理，将列车看作一运动着的有限长线声源，建立了有声屏障时城市高架轨道交通沿线声场分布计算模型。

Mark Rustad is President of NetWell Noise Control, NetWell is a leading supplier of ceiling tiles, acoustic products, sound proofing treatments, and online acoustical consulting services.

马克鲁斯塔德是总统NetWell噪声控制， NetWell是一家领先的供应商，天花板，声学产品，隔音处理，在线声学咨询服务。

The Pinyin model is Trigram that adds up same voice data in language model and it is a new link between original acoustic and language model.It can be used to obtain probability of interrelated Pinyin string.The results in experiments show that by using the model to make final process of the recognition of acoustic layer,the recognition rate of the top one can be increased 13 percent,and the rate of the front fine is similar with the...

拼音模型是累加语言模型中同音字的相关数据后得到的 3元模型，是在原来的声学模型和语言模型之间增加的一个新环节，可用来求取相关拼音串的先验概率，实验结果表明，用它作为声学层识别的后处理，可使第 1名的识别率提高 13个百分点，可使前 5名的识别率与原来声学模型输出前 10名的识别率相当

Results In 60 patients with organic diseases of vocal cords, all the acoustic parameters were significantly increased and the spectrograph showed irregularity,breakage or lack of harmonic waves and formants, and increase of noise. In 50 cases with functional voice disorder, the shimmer and NNE were significantly increased but the jitter was usually normal. The spectrograph showed pathologic changes of harmonic waves and formants in middle and high frequencies.

结果 60例器质性声带疾病嘶哑嗓音表现各项声学参数均值高于正常，差别有统计学意义；声谱图特征为谐波及共振峰不规则、断裂甚至消失，噪声成分增加等。50例功能性发声障碍嗓音显示shimmer及NNE值较正常升高，声谱图主要表现中、高频区谐波及共振峰病理改变，波纹不平稳、抖动等；94％(47／50)患者的嗓音信号中可发现正常声学特征。

Objective To assess the role of acoustic densitometry technique in tissue characterization of normal femoral artery and atherosclerotic plaque.

目的 应用声学密度定量技术检测正常股动脉管壁及不同类型粥样斑块的声学定量参数。

Diving behavior and echolocation pulse rate of three captive porpoises in Wuhan Baiji Dolphinarium were observed continuously using both behavioral and acoustic data loggers on 23?25 November 2002. A total of 38 hr of behavioral data and 40 hr of acoustic data were recorded for each porpoise.

同时使用行为和声学微型生物跟踪记录仪，于2002 年11 月23-25日，跟踪记录了白鱀豚馆3 头江豚的行为和发声，每头江豚行为记录时间38 hr，声学记录时间40hr。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。