和声学

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。

This dissertation describes the development of the modern acoustics, related measure standard and equipment at the beginning.

本文介绍了现代声学的发展及声学测量标准和声学测量仪器在国内外的发展概况。

Drift electron mobility, the Hall factor and Hall mobility in GaN are calculated according to Mattiessen's rule as a function of temperature for carrier concentrations with the compensation ration as a parameter on the basis of taking into account the individual average scattering momentum relaxation time of four scattering mechanisms, namely, ionized impurity scattering, polar mode optical scattering, acoustic piezoelectric scattering and acoustic phonon deformation potential scattering which have an effect on electron mobility of GaN.

考虑了对纤锌矿型氮化镓低场电子输运影响最为显著的4种散射机制－电离杂质散射，极化光学波散射，声学波压电散射和声学声子形变势散射的单个平均动量驰豫时间，采用Mattiessen's rule计算了不同补偿率以及不同载流子浓度条件下，氮化镓电子漂移迁移率，霍耳因子以及霍耳迁移率随温度的变化。

The systems of the voice acoustic analyzing and the glottal image analyzing, which are realized by using LabWindows/CVI virtual instrument programming language, are discussed in detail.

嗓音声学分析系统可进行声音信号的采集、存储和回放，并可对采集的声音信号进行三维声图分析和声学参数的提取分析。

The development of speech sounds was investigated using the analysis framework of phonemic contrast in Putonghua-speaking children.

普通话言语的发展：言语清晰度、音位对比及声学特征本研究采用音位对比的分析框架研究讲普通话儿童的言语声的发展，研究中采用了临床中的两种角度：知觉任务和声学性质。

Based on the violin, cello and double bass for the same position on the fingers rubbing strings rolling away from comparison and analysis of acoustic patterns; means single and double string rubbing rubbing means of acoustic string playing patterns and specific examples of analysis and comparison; refers to rub in the two-string Mixing strings with a single means to achieve the same sound, the string in the rubbing action on the comparison, so as to demonstrate the two-finger chord rubbing means smaller, the palm of your hand for a small, in the string rubbing speed, rubbing the string action is better than the single rate means the string rubbing , and can also increase the need for greater low-double bass string, the bit rate of rubbing

本文通过对小提琴、大提琴和低音提琴进行在同一把位上揉弦的手指滚动距离比较和声学图谱分析比较；进行单指揉弦和双指揉弦的声学图谱和具体演奏实例分析和比较；在双指揉弦与单指揉弦达到同样音响效果的情况下，在揉弦动作上的比较，以论证双指揉弦对于手指较细、手掌窄小的人来说，在揉弦速度、揉弦动作幅度上优越于单指揉弦，并且还可以根据需要更大程度上加大低音提琴低把位揉弦的幅度。

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。

Based on the integration of the results of acoustic andfluid dynamic analysis, this paper points out that synthetical acoustic and fluiddynamic performance of muffler can be obtained by using square expansion chamber,by stringing together several podgy expansion chambers, by applying noise absorbingmaterial on chamber walls, by making chambers and pipers co-axial, by adding filletson the end of intruding pipes, and by making the diameter of outlet pipe a little greaterthan the diameter of the inlet pipe.

通过综合流体力学和声学有限元两方面的分析的结果，指出了采用方形扩张腔，采用多个短粗扩张腔串联，扩张腔壁面附吸声材料，使各管道同轴，在插入管端口加上圆角，并且令出口插入管管径略微大于入口插入管管径可以使消声结构获得最佳的声学和流体力学综合性能。

Igor Sposobin ? book " the harmony Guide", Paul Hindemith ? book "A Concise Course of traditional and acoustic",Rimsky Korsakov ? book "Practical Guide and acoustic",Percy ? The Stankevicius book and acoustic, Theodore Dubois ? a "theory and practice and acoustic Guide", Walter ?

伊·斯波索宾等人合著的《和声学教程》、保罗·兴德米特著《传统和声学简明教程》、里姆斯基·科萨科夫著《和声学实用教程》、柏西·该丘斯著《和声学》、泰奥多尔·杜布瓦著《理论与实践和声学教程》、瓦尔特·辟斯顿著《辟斯顿和声学》这六本和声教科书，是多年来沿用至今的六本较好的和声教材。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。