GSO ISO 7779:2015由GSO 发布于 2015-09-03。
GSO ISO 7779:2015在国际标准分类中归属于: 17.140.20 机器和设备的噪声。
GSO ISO 7779:2015 声学 测量无线 ICT 设备发出的空气噪声的最新版本是哪一版?
最新版本是 GSO ISO 7779:2015 。
This International Standard specifies procedures for measuring and reporting the noise emission of information technology and telecommunications equipment. NOTE 1 This International Standard is considered part of a noise test code (see 3.1.2) for this type of equipment, and is based on basic noise emission standards (see 3.1.1) ISO 3741, ISO 3744, ISO 3745 and ISO 11201. The basic emission quantity is the A-weighted sound power level which may be used for comparing equipment of the same type but from different manufacturers, or for comparing different equipment. Three basic noise emission standards for determination of the sound power levels are specified in this International Standard in order to avoid undue restriction on existing facilities and experience. ISO 3741 specifies comparison measurements in a reverberation test room; ISO 3744 and ISO 3745 specify measurements in an essentially free field over a reflecting plane. Any one of these three basic noise emission standards can be selected and used exclusively in accordance with this International Standard when determining sound power levels of a machine. The A-weighted sound power level is supplemented by the A-weighted emission sound pressure level determined at the operator position(s) or the bystander positions, based on basic noise emission standard ISO 11201. This sound pressure level is not a worker's immission rating level, but it can assist in identifying any potential problems that could cause annoyance, activity interference, or hearing damage to operators and bystanders. Methods for determination of whether the noise emission includes prominent discrete tones or is impulsive in character are specified in Annexes D and E, respectively. This International Standard is suitable for type tests and provides methods for manufacturers and testing laboratories to obtain comparable results. The methods specified in this International Standard allow the determination of noise emission levels for a functional unit (see 3.1.4) tested individually. The procedures apply to equipment which emits broad-band noise, narrow-band noise and noise which contains discrete-frequency components, or impulsive noise. The sound power and emission sound pressure levels obtained can serve noise emission declaration and comparison purposes (see ISO 9296). NOTE 2 The sound power and emission sound pressure levels obtained are not to be considered as installation noise immission levels; however, they can be used for installation planning (see ECMA TR/27[4]). If sound power levels obtained are determined for a number of functional units of the same production series, they can be used to determine a statistical value for that production series (see ISO 9296).
柔性电子“化刚为柔”,将冰冷生硬的电子设备变得轻柔、可变形并且能高灵敏地实时传输信息,在医学监测、诊断和治疗领域被广泛需求和应用。 基于过去的研究基础,研究人员通过精巧的力学结构设计和无线系统优化,使得使用者在佩戴无线机械声学监测设备的过程中几乎毫无“感觉”;此监测设备具备高灵敏度和响应能力等特点,同时,能将环境噪声的干扰降至最低。 ...
柔性电子“化刚为柔”,将冰冷生硬的电子设备变得轻柔、可变形并且能高灵敏地实时传输信息,在医学监测、诊断和治疗领域被广泛需求和应用。 基于过去的研究基础,研究人员通过精巧的力学结构设计和无线系统优化,使得使用者在佩戴无线机械声学监测设备的过程中几乎毫无“感觉”;此监测设备具备高灵敏度和响应能力等特点,同时,能将环境噪声的干扰降至最低。 ...
《智能眼镜声学性能测试规范》 智能眼镜是指如同智能手机一样拥有独立的操作系统,可以通过软件安装来实现各种功能的可穿戴的眼镜设备统称。其可以是与智能设备通过蓝牙等无线连接方式连接后实现声音的采集和播放,也可以由具有独立的控制系统、显示系统和声学系统组成,其中声学系统包括有采集声音的传感器和发出可听声的扬声器以及相应的声信号处理部分构成,其性能直接影响智能眼镜的交互效果。 ...
中国科学院振动噪声重点实验室研制的声相仪系统在中国科学院公众科学日亮相,引起参观人员的强烈兴趣。 声相仪,又名声学照相机,是利用传声器阵列测量一定范围内的声场分布的专用设备,可用于测量物体发出的声音的位置和声音辐射的状态,并运用云图方式显示出直观的图像,即声成像测量。 ...
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号