声学噪声

GB/T4129-1995声学噪声源声功率级的测定&标准声源的性能要求与校准

Acoustics Determination of sound power levels of noise sources Requirements for the performance and calibration of reference sound source

建立数字超声系统的物理模型，分析声学噪声和非声学噪声，提出消除脉冲噪声的极值滤波算法。

In this work a physical model on digital ultrasonic system is established and applied to analyze noises encountered in ultrasonic testing . An algorithm of extremum filter is constructed to suppress the pulse noise .

GB/T17249.1-1998声学低噪声工作场所设计指南噪声控制规划

Acoustics Guidelines for the design of low-noise workplaces Noise control strategies

空调系统中风阀开度对声学房间噪声的影响

Impact of Damper Opening in the Air-conditioning System to the Noise of Acoustical Room

该系统可用于建筑声学、噪声预测和声学虚拟现实等领域。

So the system can be applied into such fields as building acoustics , noise prediction and audio virtual reality .

数值计算了全船与典型舱室声压分布，为FPSO声学设计和噪声控制提供依据。

This paper also gives the computational results about sound pressure distribution in the whole ship and the typical cabins , which can provide measures for acoustics design and noise control in FPSO .

低速航空声学风洞背景噪声测试技术研究

An investigation of background noise measurement technology in aeroacoustic wind tunnel

第三，水池中的水下目标声学特性与噪声信号的动态模拟方法研究。

Finally , a dynamic pool simulation method for the underwater targets echo sound and disturb signal is presented .

GB/T14259-1993声学关于空气噪声的测量及其对人影响的评价的标准的指南

Acoustics & Guide to standards on the measurement of airborne acoustical noise and evaluation of its effects on human beings

论述了通风机叶片噪声产生的气动声学机理和噪声特点，并阐述了若干种从叶片造型方面降低风机叶片噪声的措施，可供设计者参考。

The principle of ventilator blade noise and its property are discussed and several methods to reduce noise by changing blade shape are also brought out .

文章主要综述了国内外对局部扇风机气动噪声的研究与控制方法，对孤立叶轮的声学模型及其噪声控制方法。

The paper summarizes mainly the research and control of pneumatic noise of local fan , the sonic model of isolated blade wheel and the control method of noise in home and foreign countries .

对MP3所用到的几个关键技术，如子带滤波、心理声学模型、动态噪声分配等作出简明介绍。

This paper introduces the key technologies used in MP3 , such as subband filter , psychoacoustical model and dynamic noise allocation .

声学封包在环境噪声治理中的应用

An Application of Acoustic Enclosure for Suppressing the Environmental Noise

GB/T14365-1993声学机动车辆定置噪声测量方法

Sound attenuation Acoustics & Measurement of noise emitted by stationary road vehicles

基于声学灵敏度的汽车噪声声-固耦合有限元分析

Coupled Acoustic-structural Finite Element Analysis of Vehicle Interior Noise Based on Acoustic Sensitivity

这种算法可作为气流声学分析、排气噪声预测的有效手段。

This new algorithm may be employed in exhaust noise prediction and muffler performance simulation .

声学材料是降低噪声，改善声环境的有效措施。

The acoustic material is an effective measure which could reduce noise and improve acoustic environment .

论文从实验研究的角度出发，分析了不同心理声学参数对摩托车噪声声音品质的影响。

With some experiments , we analyze the influence of some different psychoacoustics parameters over motorcycle sound quality .

GB/T3768-1996声学声压法测定噪声源声功率级反射面上方采用包络测量表面的简易法

Acoustics Determination of sound power levels of noise sources using sound pressure Survey method using an enveloping measurement surface over a reflecting plane

并根据声学理论分析排气噪声，提出理论上的予计及试验实测压缩机排气噪声的一种方法。

And then , according to the theory of acoustics , the noise of the discharge of a compressor is analysed and a method of prediction and testing of the discharge has been recommended .

测试规范及结果处理按照《GB/T3768-1996声学声压法测定噪声源声功率级反射面上方采用包络测量表面的简易法》方法进行。

The testing methods and results dealing with are according to China national standard 《 GB 3796-1996 Acoustics-Determination of sound power levels of noise sources using sound pressure-survey method using enveloping measurement surface over a reflecting plane 》 .

所谓的被动式噪声抑制方法是从声学材料和声学结构入手抑制噪声，该方法对抑制高频噪声较为有效，而对低频噪声效果不好，且系统设备笨重、体积庞大。

Passive Noise Control suppresses noise by sound-absorbing material and sound-absorbing construction . This method acts on high frequency noise suppression , but not on low frequency noise , and it is difficult to handle because of weight and bulk .

文章论述了上海电影译制厂新建电影对白录音棚的音质技术指标、混响特性控制设计、声学材料与结构的设计与配置、声场扩散与声学装修设计、噪声控制设计及音质鉴测结果等。

This paper mainly discusses acoustical criteria in such a space , design of reverberation characteristics , configuration of acoustical structures and materials , design of sound field diffusion with acoustic finishing , noise control , and acoustical measurement results .