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声学 听力测试方法 第3部分:语言测听方法
Acoustics - Audiometric test methods - Part 3: Speech audiometry
参考页数:31P;A4
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林业和园艺机械.带内燃机的便携手持式机械的噪声试验规范.工程法(2级准确度)
Forestry and gardening machinery - Noise test code for portable hand-held machines with internal combustion engine - Engineering method (Grade 2 accuracy)
参考页数:42P.;A4
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声学.校准测听设备的基准零级.第9部分:基准听力阈级测定的首选试验条件
Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels
参考页数:9P;A4
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声学.听力测试方法.第1部分:基本纯音气导和骨导听阈测听方法
Acoustics - Audiometric test methods - Part 1: Pure-tone air and bone conduction audiometry
参考页数:36P.;A4
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声学.18至25岁听觉正常人群在自由场听力条件下听阈的统计分布
Acoustics - Statistical distribution of hearing thresholds of otologically normal persons in the age range from 18 years to 25 years under free-field listening conditions
参考页数:12P;A4
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声学.听力测试方法.第2部分:纯音和窄带试验信号声场测听方法
Acoustics - Audiometric test methods - Part 2: Sound field audiometry with pure-tone and narrow-band test signals
参考页数:16P;A4
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声学.环境噪声的描述、测量和评估.第2部分:声压水平的测定
Acoustics - Description, measurement and assessment of environmental noise - Part 2: Determination of sound pressure levels
参考页数:60P.;A4
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声学.听力测量设备校准用参考零点.第6部分:短时持续听觉试验信号参考扩音阀
Acoustics - Reference zero for the calibration of audiometric equipment - Part 6: Reference threshold of hearing for test signals of short duration
参考页数:9P;A4
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声学.测听设备的校准用参考零点.第5部分:频率范围:8kHz~16kHz的纯音用参考等效值阈声压级
Acoustics - Reference zero for the calibration of audiometric equipment - Part 5: Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz
参考页数:6P;A4
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声学 校准测听设备的基准零级 第7部分:自由场和扩散场测听的基准听阈
Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
参考页数:13P.;A4
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