和声学

The statistical theory and Hilbert-Huang transformation were used to analyze the flame acoustic signals in time and frequency domains.

应用统计理论和Hilbert-Huang变换对炉内火焰声学信号分别进行了时域和频域的分析。

This paper concerns with the study of the acoustic characteristics on velar stops.In Standard Chinese,Chinese dialects and many other languages,there is a great difference between velar stops and bilabials,alveolars in VOT, silence ,burst,and so on.

通过对汉语普通话、方言和其他几种语言中塞音①的声学特征进行考察，发现其中的舌根塞音/k/、/k' /在成阻、持阻和除阻爆破几方面均具有一些与双唇塞音、舌尖塞音不同的表现，并进行了初步的探讨与总结。

The program is suitable for use with acoustic and electric guitar, bass, mandolin, banjo, ukulele, bouzouki, violin, violoncello, and viola.

程序为使用是合适的带声学和电吉他，低音部，曼陀林，班卓琴，夏威夷的四弦琴，希腊曼陀琳，小提琴，大提琴，和中提琴。

The method and results provide significant guidance and valuable reference for auditoria acoustics design, improvement of room acoustical environment and environmental acoustics research and have wide application prospect.

本文的方法和结果对厅堂音质设计、室内声环境改善、环境声学研究等具有指导意义和重要参考价值，具有广阔的应用前景。

The acoustics system is based on AQS901 sonar system, compatible with BARRA, SSQ-41 and SSQ-53, TANDEM, and Ultra active and passive sonobuoys.

声纳系统核心为AQS901声学系统，可兼容巴拉，SSQ-41，SSQ-53，坦登和奥察等主动和被动声纳浮标。

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 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。

In the Sixth Chapter, the Wavelet analysis method is introduced in discussing some acoustic imaging problems related to the physical background of the ultrasonic detection. In the light of the solution of some theoretical problem in the 2D Wavelet transmission of two components form, the enhancement and identification of the spotty and fibriform faults of the acoutic image, along with two acoustic image deblurring methods based respectively on the acoustic physical feature analysis and the acoustic image's spatial feature analysis of the object, are realized. Therefore the image degeneration problem resulting from the acoustic beam diffusion or the acoustic focus diffusion in the ultrasonic detection are effectively improved. The software for this purpose has also been developed.

第六章首次应用小波分析的方法，研究了与超声检测的物理背景有关的一些声象处理问题，在解决了二分量形式的二维小波变换中的一些理论问题的基础上，建立起了对声象中点状和线状缺陷目标的增强与分离方法，以及分别基于目标的声学物理特征分析和基于目标声象空间特征分析的二种声象弥散消除方法，实验分析结果表明，这种方法较好地解决了超声检测中由于声束截面或声焦点扩散所造成的成象退化问题。

The history and current situation of research in speech recognition are proposed all-sidedly and systematically. We probe into such topics about acoustic features, phonetic features, phonologic features and auditory perception in terms of related theory and disciplines. Furthermore, we summarize and analyze focus in current theoretical and technical aspects of speech recognition and immediately put an insight into challenge to speech recognition presently, even in a long time.

论文全面、系统地介绍了国内外语音识别的发展历史和发展现状，结合相关学科的知识，分析了语音声学特征、语音学特征、音系学特征及其语音感知等有关问题，分析并总结了目前语音识别理论和技术实现方面的研究重点以及目前、甚至在相当长的时期内语音识别面临的挑战。

IsraelNN.com The Seismologic Division of the Ministry of National Infrastructure's Geophysical Institute will attempt to simulate an earthquake in the southern Negev on Thursday. The experiment, financed by the U.S. Defense Department, is a joint project with the University of Hawaii and is part of a scientific project intended to improve seismological and acoustic readings in Israel and its environs, up to a 1,000 km/621 mile radius.

IsraelNN.com）国家基础设施部的地球物理研究所的地震学小组，周四在内盖夫南部将尝试模拟地震，是经费由美国国防部支持的实验，与夏威夷大学的一个联合项目，亦是一一个科学项目的部分，旨在改进地震学和在以色列和其周围地区的声学读数，达到 1000 km/621哩半径。

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％。