17.140.50 电声学 标准查询与下载

JIS C 1509-2:2018 电声学.声级计.第2部分:型式评定试验

Electroacoustics -- Sound level meters -- Part 2: Pattern evaluation tests

NF S31-139*NF EN IEC 60942:2018 电声学.音响校准仪

Electroacoustics - Sound calibrators

DIN EN 60500:2018 水声学.水听器.频率范围为1 Hz至500 kHz的水听器性能(IEC 60500-2017);德文版本EN 60500-2017

This International Standard IEC 60500 specifies the relevant characteristics and properties of hydrophones in the frequency range 1 Hz to 500 kHz, and specifies how to report these characteristics. The scope does not cover performance requirements for specific hydrophone types, or for specific hydrophone applications.

Underwater acoustics - Hydrophones - Properties of hydrophones in the frequency range 1 Hz to 500 kHz (IEC 60500:2017); German version EN 60500:2017

IEC TS 62903:2018 超声学.用自互易法测量球形弯曲换能器的电声参数和声输出功率

Ultrasonics - Measurements of electroacoustical parameters and acoustic output power of spherically curved transducers using the self-reciprocity method

IEC 62489-1:2010+AMD1:2014+AMD2:2017 CSV 电声学.辅助听力用音频感应回路系统.第1部分:系统部件性能的测量和规定方法

Electroacoustics - Audio-frequency induction loop systems for assisted hearing - Part 1: Methods of measuring and specifying the performance of system components

IEC 60118-4:2014/AMD1:2017 修改件1.电声学.助听器.第4部分:助听器用感应回路系统.系统性能要求

Amendment 1 - Electroacoustics - Hearing aids - Part 4: Induction-loop systems for hearing aid purposes - System performance requirements

IEC 60118-4:2014+AMD1:2017 CSV 电声学助听器第4部分:助听器用感应回路系统系统性能要求

Electroacoustics - Hearing aids - Part 4: Induction-loop systems for hearing aid purposes - System performance requirements

IEC 60942:2017 电声学.音响校准器

This document specifies the performance requirements for three classes of sound calibrator: class LS (Laboratory Standard), class 1 and class 2. Acceptance limits are smallest for class LS and greatest for class 2 instruments. Class LS sound calibrators are normally used only in the laboratory; class 1 and class 2 are considered as sound calibrators for field use. A class 1 sound calibrator is primarily intended for use with a class 1 sound level meter and a class 2 sound calibrator primarily with a class 2 sound level meter, as specified in IEC 61672-1. The acceptance limits for class LS sound calibrators are based on the use of a laboratory standard microphone, as specified in IEC 61094-1, for demonstrations of conformance to the requirements of this document. The acceptance limits for class 1 and class 2 sound calibrators are based on the use of a working standard microphone, as specified in IEC 61094-4, for demonstrations of conformance to the requirements of this document. To promote consistency of testing of sound calibrators and ease of use, this document contains three normative annexes - Annex A "Pattern evaluation tests", Annex B "Periodic tests", Annex C "Pattern evaluation report", and two informative Annexes - Annex D "Relationship between tolerance interval, corresponding acceptance interval and the maximum-permitted uncertainty of measurement" and Annex E "Example assessments of conformance to specifications of this document". This document does not include requirements for equivalent free-field or random-incidence sound pressure levels, such as can be used in the overall sensitivity adjustment of a sound level meter. A sound calibrator can provide other functions, for example, tonebursts. Requirements for these other functions are not included in this document.

Electroacoustics - Sound calibrators

EN 60645-1:2017 电声学 测听设备 第1部分：纯音和语音测听设备

IEC 60645-1:2012 specifies general requirements for audiometers and particular requirements for pure-tone audiometers designed for use in determining hearing threshold levels, relative to standard reference threshold levels established by means of psychoacoustic test methods. The object of this standard is to ensure: a) That tests of hearing in the frequency range 125 Hz to 16 000 Hz on a given human ear, performed with different audiometers which comply with this standard shall give substantially the same results; b) That the results obtained represent a valid comparison between the hearing of the ear tested and the reference threshold of hearing; c) That audiometers are classified according to the range of test signals they generate, according to the mode of operation or according to the complexity of the range of auditory functions they test. This third edition cancels and replaces the second edition, published in 2001, and IEC 60645-4 published in 1994. It constitutes an editorial revision.

Electroacoustics - Audiometric equipment - Part 1: Equipment for pure-tone and speech audiometry

GSO IEC 62585:2017 电声学 确定校正以获得声级计自由场响应的方法

This International Standard provides information on the corrections required over a range of frequencies in order for a periodic test of a sound level meter to be performed according to IEC 61672-3. These corrections include: • corrections for the typical effects of reflections from the case of the sound level meter and diffraction of sound around the microphone; • corrections for the deviation of the typical microphone frequency response from a uniform frequency response, where the actual microphone response cannot be measured; • corrections for the influence on the frequency response of a typical microphone of a specified windscreen and any other accessory that is part of the configuration for normal use of the particular sound level meter submitted for testing. This International Standard includes discussion about uncertainties of measurement of the required corrections. In some instances a maximum permitted expanded uncertainty for the manufacturer or testing laboratory is given. This maximum permitted expanded uncertainty excludes any component due to the variability of different samples of artefact (for example, microphone or windscreen). It should be noted that if large uncertainties of measurement are quoted for each of the individual corrections, when they are combined to account for the configuration of sound level meter under test, the large individual uncertainties may result in a failure to conform to the maximum permitted expanded uncertainties of measurement given in Table A.1 of IEC 61672-1:— and hence a failure of the sound level meter to conform to IEC 61672-1. In addition, this International Standard describes methods for determining these corrections, over the frequency range of interest, and explains the adjustment value at the calibration check frequency to be quoted by the manufacturer of the sound level meter (also required by IEC 61672-3). When the sound level meter manufacturer recommends the use of a sound calibrator, comparison coupler, or an electrostatic actuator for periodic testing of the acoustical response of a sound level meter at various frequencies, this International Standard describes methods of measurement of the corrections required to adjust the indication on the sound level meter to an equivalent free-field level, over the frequency range of interest. These corrections relate to a specific model of sound calibrator, comparison coupler or electrostatic actuator, microphone and sound level meter (also required by IEC 61672-3). The aim of this International Standard is to ensure that the adjustment value at the calibration check frequency and all corrections are determined using consistent and appropriate methods. It is intended that this International Standard will be used by manufacturers to determine adjustment values and corrections, by laboratories performing pattern evaluation tests according to IEC 61672-2, and by laboratories performing periodic tests according to IEC 61672-3. Laboratories performing periodic tests according to IEC 61672-3 will also need to consult this International Standard to ensure that the expanded uncertainties of measurement for the corrections quoted by the manufacturer do not exceed the maximum permitted values. The corrections obtained by use of the methods given in this International Standard are the result of measurements made using samples of the devices. It is possible that these corrections may not be totally representative either for all batches produced or over time.Repeating the measurements at regular intervals is recommended to ensure that no changes are required to the corrections stated in the instruction manual. This International Standard does not specifically cover the case where the sound level meter is fitted with a microphone intended for use in random-incidence sound fields, as information is given in IEC 61183.

Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter

GSO IEC/TS 62556:2017 超声波 场表征 高强度治疗超声 (HITU) 换能器和系统的场参数规范和测量

This technical specification is applicable to high intensity therapeutic ultrasound (HITU) devices, specifying: – relevant parameters for quantifying the field; – measurement methods at relatively low output levels and methodology for extrapolating these to higher therapeutic level fields; – consideration of sidelobes and pre-focal maxima; – parameters relevant to HITU transducers of different construction and geometry, including non-focusing, focusing with or without lenses, collimated, diverging and convergent transducers, multi-element transducers, scanning transducers and multiple sources. This technical specification is intended to support the ultrasonic measurement requirements given in IEC 60601-2-62. These specifications would have use in quality assurance, safety testing, and the standardization of communications regarding the clinical performance of HITU systems. Where possible, this technical specification incorporates specifications from other related standards. This technical specification does not apply to the following types of devices, which are covered by other standards: – lithotripters (see IEC 61846); – surgical equipment (see IEC 61847); – physiotherapy devices (see IEC 61689). Throughout this technical specification SI units are used. In the specification of certain parameters, such as beam-areas and intensities, it may be convenient to use decimal multiples or sub-multiples. For example, beam-area may be specified in cm² and intensities in W/cm² or mW/cm².

Ultrasonics - Field characterization - Specification and measurement of field parameters for high intensity therapeutic ultrasound (HITU) transducers and systems

DIN EN 60565-2:2017 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(IEC 87 / 646 / CD:2017)

This International Standard specifies the low frequency pressure calibration methods of hydrophones from 0,01 Hz to several kilohertz.

Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 2: Procedures for low frequency pressure calibration (IEC 87/646/CD:2017)

IEC 62359:2010/AMD1:2017 修改件1.超声学.场特性.与医疗诊断超声场有关的热和机械指数测定的试验方法

Amendment 1 - Ultrasonics - Field characterization - Test methods for the determination of thermal and mechanical indices related to medical diagnostic ultrasonic fields

IEC 62359:2010+AMD1:2017 CSV 超声波.场特性.与医学诊断超声场相关的热和机械指数测定的试验方法

Ultrasonics - Field characterization - Test methods for the determination of thermal and mechanical indices related to medical diagnostic ultrasonic fields

BS PD IEC/TR 63079:2017 听力回路系统（HLS）实施规程

Code of practice for hearing-loop systems (HLS)

JIS C 1509-1:2017 电声学.声级计.第1部分:规范

Electroacoustics -- Sound level meters -- Part 1: Specifications

IEC 62359:2017 声学.声场特性.与医疗诊断超声场有关的热和机械指数测定的试验方法

This International standard is applicable to medical diagnostic ultrasound fields. This standard establishes parameters related to thermal and non-thermal exposure aspects of diagnostic ultrasonic fields; methods for the determination of an exposure parameter relating to temperature rise in theoretical tissue-equivalent models, resulting from absorption of ultrasound; methods for the determination of an exposure parameter appropriate to certain non- thermal effects. NOTE 1 In Clause 3 of this standard, SI units are used (per ISO/IEC Directives, Part 2, ed. 5, Annex I b) in the Notes below definitions of certain parameters, such as beam areas and intensities; it may be convenient to use decimal multiples or submultiples in practice. Users must take care of decimal prefixes used in combination with the units when using and calculating numerical data. For example, beam area may be specified in cm2 and intensities in W/cm2 or mW/cm2 . NOTE 2 Underlying calculations have been done from 0,25 MHz to 15 MHz for MI and 0,5 MHz to 15 MHz for TI. NOTE 3 The thermal indices are steady state estimates based on the acoustic output power required to produce a 1°C temperature rise in tissue conforming to the "homogeneous tissue 0,3 dBcm-1 MHz-1 attenuation model".

Ultrasonics - Field characterization - Test methods for the determination of thermal and mechanical indices related to medical diagnostic ultrasonic fields

KS C IEC 61094-1A-2017 电声学 - 测量用麦克风 - 第1部分:测试室标准麦克风的标准

Electroacoustics — Measurement microphone — Part 1: Specifications for laboratory standard microphones

KS C IEC 60645-3A-2017(2022) 电声学.听力计.第3部分:听力测量和神经耳科用短时听觉测试信号

Electroacoustics — Audiometers — Part 3：Auditory test signals of short duration for audiometric and neuro-otological purposes

KS C IEC 60118-4-2017(2022) 助听器第4部分:助听器用音频感应线圈的磁场强度

Hearing aids－Part 4：Magnetic field strength in audio－frequency induction loops for hearing aid purposes