17.140.50 电声学 标准查询与下载

IEC TR 62809:2019 IEC 60601-2-66范围内产品的要求和试验总结

Summary of requirements and tests to products in the scope of IEC 60601-2-66

IEC TR 62809:2019 RLV IEC 60601-2-66范围内产品的要求和试验总结

Summary of requirements and tests to products in the scope of IEC 60601-2-66

IEC 60601-2-66:2019 医用电气设备第2-66部分:助听器和助听器系统基本安全和基本性能的特殊要求

Medical electrical equipment - Part 2-66: Particular requirements for the basic safety and essential performance of hearing aids and hearing aid systems

IEC 60601-2-66:2019 RLV 医用电气设备第2-66部分:助听器和助听器系统基本安全和基本性能的特殊要求

Medical electrical equipment - Part 2-66: Particular requirements for the basic safety and essential performance of hearing aids and hearing aid systems

IEC 60565-2:2019 水下声学 - 水听器 - 水听器的校准 第2部分:低频压力校准程序

Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 2: Procedures for low frequency pressure calibration

IEC 60118-9:2019 电声学助听器第9部分:骨传导助听器性能特性的测量方法

Electroacoustics – Hearing aids – Part 9: Methods of measurement of the performance characteristics of bone conduction hearing aids

IEC 63009:2019 超声波 物理治疗系统 20 kHz 至 500 kHz 频率范围内的现场规范和测量方法

Ultrasonics - Physiotherapy systems - Field specifications and methods of measurement in the frequency range 20 kHz to 500 kHz

IEC TS 63070:2019 超声学.场特性.测定模拟组织材料和静止空气中换能器辐射表面温度升高的红外成像技术

Ultrasonics - Field characterization - Infrared imaging techniques for determining temperature elevation in tissue-mimicking material and at the radiation surface of a transducer in still air

IEC TS 63001:2019 超声槽和超声反应器中空化噪声的测量

Measurement of cavitation noise in ultrasonic baths and ultrasonic reactors

T/ZZB 0712-2018 环境噪声自动监测系统

本标准规定了环境噪声自动监测系统（以下简称监测系统）的术语和定义、基本要求、技术要求、试验方法、检验规则、标志、包装、运输、贮存和质量承诺。 本标准适用于准确度等级为1级的环境噪声自动监测系统（内含声级计、统计分析仪、倍频程滤波器和1/3倍频程滤波器等功能），测量范围为10 Hz～20 kHz。

Automatic monitoring system of environmental noise

IEC 60050-801:1994/AMD1:2018 修改件1.国际电工词汇（IEV）.第801部分:声学和电声学

Amendment 1 - International Electrotechnical Vocabulary (IEV) - Part 801: Acoustics and electroacoustics

IEC TR 63079:2017/AMD1:2018 听力环路系统（HLS）实施规程

Code of practice for hearing-loop systems (HLS)

IEC TR 63079:2017+AMD1:2018 CSV 听力环路系统（HLS）实施规程

Code of practice for hearing-loop systems (HLS)

BS EN 62489-1:2010+A2:2018 电声学 用于辅助听力的音频感应环路系统 测量和指定系统组件性能的方法

1   Scope This part of the IEC 62489 series applies to the components of audio-frequency induction-loop systems for assisted hearing. It may also be applied to such systems used for other purposes, as far as it is applicable. This standard is intended to encourage accurate and uniform presentation of manufacturers' specifications, which can be verified by standardized methods of measurement. It is intended for type testing. The components considered are the following: — amplifiers; — m icrophones; — other components, such as playback equipment. This standard does not deal with safety, for which IEC 60065 applies. It also does not deal with EMC (Electromagnetic compatibility) and EMF (Electromagnetic fields, in the context of human exposure).

Electroacoustics. Audio-frequency induction loop systems for assisted hearing - Methods of measuring and specifying the performance of system components

DIN EN IEC 60942:2018 电声学.音响校准器(IEC 60942-2017); 德文版本EN IEC 60942-2018

This standard specifies performance requirements for 3 classes of sound calibrators: class LS (Laboratory Standard), class 1 and class 2. Class LS sound calibrators are normally used only in the laboratory; class 1 and class 2 are considered as sound calibrators for field use. Conformance is demonstrated when a) measured deviations from design goals do not exceed the applicable acceptance limits and b) the uncertainty of measurement does not exceed the corresponding maximum-permitted uncertainty.

Electroacoustics - Sound calibrators (IEC 60942:2017); German version EN IEC 60942:2018

BS EN IEC 60118-4:2015+A1:2018 电声学 助听器 用于助听目的的感应环路系统 系统性能要求

1   Scope This part of IEC 60118 is applicable to audio-frequency induction-loop systems producing an alternating magnetic field at audio frequencies and intended to provide an input signal for hearing aids operating with an induction pick-up coil ( telecoil ). Throughout this standard, it is assumed that the hearing aids used with it conform to all relevant parts of IEC 60118. This standard specifies requirements for the field strength in audio-frequency induction loops for hearing aid purposes, which will give adequate signal-to-noise ratio without overloading the hearing aid. The standard also specifies the minimum frequency response requirements for acceptable intelligibility. Methods for measuring the magnetic field strength are specified, and information is given on appropriate measuring equipment (see Annex B), information that should be provided to the operator and users of the system (see Annex C), and other important considerations. This standard does not specify requirements for loop driver amplifiers or associated microphone or audio signal sources, which are dealt with in IEC 62489-1, or for the field strength produced by equipment, such as telephone handsets, within the scope of ITU-T P.370.

Electroacoustics. Hearing aids - Induction-loop systems for hearing aid purposes. System performance requirements

BS EN 61391-1:2006+A1:2017 超声波 脉冲回波扫描仪 校准空间测量系统和测量系统点扩散函数响应的技术

1   Scope This International Standard describes methods of calibrating the spatial measurement facilities and point-spread function of ultrasonic imaging equipment in the ultrasonic frequency range 0,5 MHz to 15 MHz. This standard is relevant for ultrasonic scanners based on the pulse-echo principle of the types listed below: — mechanical sector scanners; — electronic phased-array sector scanners; — electronic linear-array scanners; — electronic curved-array sector scanners; — water-bath scanners based on any of the above four scanning mechanisms; — 3D-volume reconstruction systems.

Ultrasonics. Pulse-echo scanners - Techniques for calibrating spatial measurement systems and measurement of system point-spread function response

BS EN 61260-2:2016+A1:2017 电声学 倍频程和分数倍频程滤波器 模式评估测试

Electroacoustics. Octave-band and fractional-octave band filters - Pattern evaluation tests

BS EN 62127-2:2007+A2:2017 超声波 水听器 高达 40 MHz 的超声波场校准

1   Scope This part of IEC 62127 specifies: • absolute hydrophone calibration methods; • relative (comparative) hydrophone calibration methods. Recommendations and references to accepted literature are made for the various relative and absolute calibration methods in the frequency range covered by this standard. This standard is applicable to • hydrophones used for measurements made in water and in the ultrasonic frequency range up to 40 MHz; NOTE 1 Although some physiotherapy medical applications of medical ultrasound are developing which operate in the frequency range 40 kHz to 100 kHz, the primary frequency range of diagnostic imaging remains above 2 MHz. It has recently been established that, even in the latter case, the hydrophone response at substantially lower frequencies can influence measurements made of key acoustic parameters [1]. • hydrophones employing circular piezoelectric sensor elements, designed to measure the pulsed wave and continuous wave ultrasonic fields generated ...

Ultrasonics. Hydrophones - Calibration for ultrasonic fields up to 40 MHz

BS EN 61672-2:2013+A1:2017 电声学 声级计 模式评估测试

1   Scope This part of IEC 61672 provides details of the tests necessary to verify conformance to all mandatory specifications given in IEC 61672‑1 for time-weighting sound level meters, integrating-averaging sound level meters, and integrating sound level meters. Pattern-evaluation tests apply for each channel of a multi-channel sound level meter, as necessary. Tests and test methods are applicable to class 1 and class 2 sound level meters. The aim is to ensure that all laboratories use consistent methods to perform pattern-evaluation tests. NOTE 1 In this document, references to IEC 61672‑1, IEC 61672‑2, and IEC 61672‑3 refer to the second editions unless stated otherwise. NOTE 2 Procedures for the pattern-evaluation testing of sound level meters designed to conform to the specifications of IEC 61672‑1:2002 were given in IEC 61672‑2:2003.

Electroacoustics. Sound level meters - Pattern evaluation tests