实施日期:2010-02-28
发布日期:2012-05-31
Acoustics--Pure tone air conduction threshold audiometry--For hearing conservation purposes
适用范围:本标准规定了以监测在噪声环境中工作人员的听力为目的的纯音气导听阈测定的必要条件和测试步骤,包括听力计的校准、测听室内可允许的最大环境噪声声压级和准备工作。本标准规定了用手控听力计和用自动记录听力计在固定频...
发布日期:1987-03-27 实施日期:1987-11-01
Electroacoustics - Simulators of human head and ear - Part 4: Occluded-ear simulator for the measurement of earphones coupled to the ear by means of ear inserts
适用范围:IEC 60318-4:2010 describes an occluded-ear simulator intended for the measurement of insert earphones in the frequency range from 100 Hz to 10 000 Hz. It is suitable for air conduction hearing aids and...
发布日期:2010-01-21 实施日期:2010-01-21
Acoustics - Statistical distribution of hearing thresholds as a function of age.
Electroacoustics - Audiometric equipment - Part 7: Instruments for the measurement of auditory brainstem responses (IEC 60645-7:2009); German version EN 60645-7:2010
实施日期:2010-08-01
Performance requirements of audiovisual terminals--Frame structure for a 64 to 1920kbit/s channel in audiovisual teleservices
适用范围:本标准规定了在单个或多个B信道(64kbit/s)或H0信道(384kbit/s),或者单个H11信道(1536kbit/s)或H12信道(1920kbit/s)上传输视听用户终端业务的帧结构。 本标准适用于把64到1920kbit/s的一个总传输速率信道动态划分成适合...
发布日期:1995-12-13 实施日期:1996-06-01
Methode fuer die Geraeuschmessung im Inneren von Kraftfahrzeugen Measurement of Noise Inside Motor Vehicles Methode de mesure du bruit. l'interieur des vehicules. moteur
适用范围:Covers motor vehicles intended for road use, including those where driver and/or passenger occupy an open cabin, but excluding agricultural tractors. Very low frequency pressure oscillations are exclud...
实施日期:1981-01-01
实施日期:2010-12-01
Safety of machinery - Safety requirements for foundry moulding and coremaking machinery and plant associated equipment.
实施日期:2000-11-15
实施日期:2009-07-31
Performance requirements of audiovisual terminals--System for establishing communication between audiovisual terminals using digital channels up to 2Mbit/s
适用范围:本标准规定了视听用户终端之间建立以多种速率和多种模式传输音频、视频、数据和远程处理信息的通信的方法。 本标准规定的方法适用于确定呼叫建立时的兼容操作模式,呼叫期间的动态模式转换,并允许呼叫转移。
发布日期:1995-12-13 实施日期:1996-06-01
Akustik. Verfahren zur Messung der wirksamen akustischen Kenndaten von Hoergeraeten Acoustics-Procedures for the Measurement of Real-Ear Acoustical Characteristics of Hearing Aids Acoustique. Methodes ...
适用范围:This International Standard specifies procedures and requirements for measuring the real-ear acoustical character-istics of hearing aids. Its purpose is to ensure that the same measurements made on a g...
实施日期:2001-07-15
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