声学的

The soundscape evaluation focuses on the effects of various acoustical, environmental, social, demographical, psychological, cultural and behavioural factors, as well as the main factors that characterise the soundscape, and the investigations are mainly based on the soundscape surveys in Europe and China.

其中声景评价重点研究各种声学、环境、社会、人口、心理、文化和行为因素对声景质量的影响，以及描述声景的主要因素，这部分研究主要建立在一系列在欧洲和中国进行的声景调查的基础上。

The dissertation contains three chapters: Chapter One Phonetic Study On Tones and Tone Sandhis At first, the author introduces the traditional dialectological description and analysis on the tones and tone sandhis of the Shanghai dialect.

先介绍传统方言学对上海方言声调的描写与分析，再用现代语音学的方法，对上海方言的单音节声调和两类双音节连读变调的声学特性（基频F0和时长）作出描写和分析。

The relationships among simulated objective acoustics parameters are discussed and analyzed. The experimental results of Chinese speech intelligibility are compared and analyzed under diotic and dichotic listening conditions with earphone and loudspeaker reproduction. The relationships between Chinese speech intelligibility scores and objective acoustics parameters are also studied and analyzed under above two listening conditions.

通过软件仿真，探讨分析仿真结果之间的关系；比较分析了采用耳机、扬声器重放在双耳无差别听闻和双耳有差别听闻条件下的汉语语言清晰度主观评价结果；探讨、分析客观声学参数与两种听闻条件下的汉语语言清晰度得分之间的关系和规律。

Through a great number of objective analysis for sound characteristics and subjective audition experiments, new sound quality parameters used in mechanical and electronical products are proposed.Firstly, the source characteristics of cars and air-conditions are analyzed.

首先，本文明确了声质量的定义、摸清了研究现状，指出仅以A声级进行声质量客观评价的局限性，在分析汽车和空调噪声的声源特性后，确定以A声级结合响度、尖锐度和波动强度三个心理声学指标来作为机电产品声质量客观评价的基础参数。

This study deals with many branches of modern mechanics, such as structural dynamics, damage mechanics as well as coupling of multi-media and multi-fields. Therefore, the research on structural dynamic properties and underwater acoustic properties of intact and delaminated composite plate structures is not only of great theoretical importance but also of practical value.

舰艇声纳导流罩的动力特性和声特性结构上涉及到复合材料结构动力学、损伤力学以及多介质、多场耦合力系等近代力学分支，因此，健康和分层损伤复合材料层合板结构动力特性和水中声学特性研究的课题，既有重要的理论研究的意义，也具有实际工程价值。

A specialist in acoustics .When he compared people's ratings with acoustical analysis of the meows, he found very clear patterns.

当他用猫叫声的声学分析法将大家的评价进行比较的时候，他得出了非常清晰的模式。

This algorithm quantizes the wavelet coefficients to different region according to the watermarking bit to be embedded, and introduce the features of human auditory system to gain the proper quantization step. In the detection, it uses threshold judgment to achieve blind detection.

该算法仍在小波域上进行，根据不同的水印信息将小波系数量化到不同的区间，并根据心理声学模型的一个结论讨论了量化步长的选择，检测时用门限判别实现了盲检测。

Though the girls only issued three singles together,"Don′t Say You Love Me,""Everything You Do," and "Mirror Mirror," there are 20 tracks on the album, a fact made possible by the various acoustic and remixed versions, not to mention the Spanish adaptation of "Everything You Do" and the Mandarin one of "Pretty Boy."

虽然只有女孩一起发出三张单曲，&不要说你爱我&，&你所做的一切，&和&镜子镜子&，有20对新专辑，这个事实成为可能的各种声学和混音版本，更遑论对西班牙适应&你所做的一切&和国语的&漂亮男孩之一。&

In long spaces, such as road or railway tunnels, underground/railway stations, corridors, and concourses, classic room acoustic theory is not applicable since the assumption of a diffuse field does not hold with the extreme dimensional condition.

在长空间中，如公路或铁路的隧道、地铁站、走廊和交通枢纽大厅，由于对扩散场的假设不适用于其极端的尺寸条件，因此无法应用经典的声学理论。

A field coil driver uses a dedicated power supply to feed its field coil to produce the strong magnetic field that makes the diaphragm react to the incoming electrical signals and reproduce sound, the stronger the magnetic field the more efficient the driver would be and the higher and lower frequencies it will respond up to the diaphragm physical and acoustical limits.

实地线圈驱动器采用专用电源给其外地线圈产生的强磁场，使膈肌反应传入的电子信号，并重现声音，强大的磁场更有效地将司机和更高和较低的频率，将应对行动膈肌物理和声学限制。

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。