17.140.50 电声学 标准查询与下载

KS C IEC 60645-5A-2022 电声学 测听设备 第5部分：声阻抗/导纳测量仪器

Electroacoustics — Audiometric equipment — Part 5：Instruments for the measurement of aural acoustic impedance/admittance

KS C IEC 60318-6-2022 电声学 人头和耳模拟器 第6部分：测量骨振动器的机械耦合器

Electroacoustics — Simulators of human head and ear — Part 6: Mechanical coupler for the measurement of bone vibrators

KS C IEC 60318-5-2022 电声学 人头和耳朵模拟器 第5部分：2 cm3 耦合器 用于测量通过耳塞耦合到耳朵的助听器和耳机

Electroacoustics — Simulators of human head and ear — Part 5: 2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts

IEC 60118-0:2022 电声学 助听器 第0部分：助听器性能特性的测量

Electroacoustics - Hearing aids - Part 0: Measurement of the performance characteristics of hearing aids

IEC TR 61094-10:2022 电声学 测量传声器 第10部分：使用可计算活塞式传声器对低频传声器进行绝对压力校准

Electroacoustics - Measurement microphones - Part 10: Absolute pressure calibration of microphones at low frequencies using calculable pistonphones

IEC TS 62791:2022 超声学.脉冲回波扫描仪.适用于多种传感器类型的灰度医用超声扫描仪的低回波球形模型和性能测试方法

Ultrasonics - Pulse-echo scanners - Low-echo sphere phantoms and method for performance testing of grey-scale medical ultrasound scanners applicable to a broad range of transducer types

22/30457844 DC BS EN 63143 电声学 用于声学测量的模块化仪器 第 1 部分：规格

BS EN 63143. Electroacoustics. Modular instrumentation for acoustical measurements - Part 1. Specifications

IEC 60318-7:2022 电声学.人头和耳朵模拟器.第7部分:测量耳朵附近声源的人头和躯干模拟器

Electroacoustics - Simulators of human head and ear - Part 7: Head and torso simulator for the measurement of sound sources close to the ear

YY/T 0937-2022 超声仿组织体模的技术要求

Technical requirements for ultrasonic tissue-mimicking phantoms

EN IEC 60318-8:2022 电声学 人头和耳朵模拟器 第8部分：用于通过耳塞耦合到耳朵的助听器和耳机的高频测量的声耦合器

IEC 60318-8:2022 describes an acoustic coupler for loading a hearing aid or insert earphone with a specified acoustic impedance when testing its acoustic performance, in the frequency range up to 16 kHz. It is suitable for air-conduction hearing aids and earphones, coupled to the ear by means of ear inserts, earmoulds or similar devices. The acoustic coupler does not simulate the human ear. However, it has an effective volume of only 0,4 cm3, which is small enough not to produce significant resonances in the coupler in the frequency range below 16 kHz. Therefore, it will load the earphone with a known acoustic impedance, which allows repeatable measurements with low uncertainty to be obtained on earphones used in extended high-frequency audiometry.

Electroacoustics - Simulators of human head and ear - Part 8: Acoustic coupler for high-frequency measurements of hearing aids and earphones coupled to the ear by means of ear inserts

GSO IEC 60565-1:2022 水下声学 水听器 水听器校准 第1部分：水听器自由场校准程序

IEC 60565-1:2020 specifies methods and procedures for free-field calibration of hydrophones, as well as individual electroacoustic transducers that can be used as hydrophones (receivers) and/or projectors (source transducers). Two general types of calibration are covered within this document: absolute calibration using the method of three-transducer spherical-wave reciprocity, and relative calibration by comparison with a reference device which has already been the subject of an absolute calibration. The maximum frequency range of the methods specified in this document is from 200 Hz to 1 MHz. The lowest acoustic frequency of application will depend on a number of factors, and will typically be in the range 200 Hz to 5 kHz depending mainly on the dimensions of the chosen test facility, The highest frequency of application for the methods described here is 1 MHz. Procedures for pressure hydrophone calibration at low frequencies can be found in IEC 60565 2 [1] . Procedures for hydrophone calibration at acoustic frequencies greater than 1 MHz are covered by IEC 62127-2 [2]. Excluded from the scope of this document are low-frequency pressure calibrations of hydrophones, which are described in IEC 60565-2 [1]. Also excluded are calibrations of digital hydrophones and systems, calibration of marine autonomous acoustic recorders, calibration of acoustic vector sensors such as particle velocity sensors and pressure gradient hydrophones, calibration of passive sonar arrays consisting of multiple hydrophones, and calibration of active sonar arrays consisting of projectors and hydrophones. This document presents a description of the requirements for free-field calibration in terms of test facility, equipment and instrumentation, signal processing, and frequency limitations. A description of achievable uncertainty and rules for the presentation of the calibration data are provided. Also included are informative annexes that provide additional guidance on • measurement of directional response of a hydrophone or projector, • measurement of electrical impedance of hydrophones and projectors, • electrical loading corrections, • acoustic far-field criteria in underwater acoustic calibration, • pulsed techniques in free-field calibrations, • assessment of uncertainty in the free-field calibration of hydrophones and projectors, • derivation of the formulae for three-transducer spherical-wave reciprocity calibrations, • calibration using travelling-wave tubes, • calibration of hydrophones using optical interferometry, and • calibrations in reverberant water tanks using continuous signals. IEC 60565-1:2020 together with IEC 60565-2:2019, cancels and replaces the second edition of IEC 60565 published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: 1) removal of all descriptions of methods for pressure calibrations of hydrophones – these are now included in Part 2; 2) removal of the derivations of formulae for free-field reciprocity calibration (both amplitude sensitivity and phase sensitivity) and placement of these into an informative annex; 3) inclusion within the scope of the calibration of the transmitting response of individual source transducers and hydrophones (but not sonar arrays); 4) re-ordering of the sections within the document such that the more general procedures for calibration such as guidance on obtaining conditions of acoustic free-field, far-field, and steady-state, appear before the descriptions of procedures for absolute or relative calibrations; 5) revision of informative Annex A to include guidance on measurement of directional response of a hydrophone or projector; 6) addition of a new informative Annex B on measurement of electrical impedance of hydrophones and projectors; 7) revision of the previous informative annex on electrical loading corrections to include corrections to account for electrical loading by added cables (now Annex C); 8) addition of a new informative Annex D on acoustic far-field criteria in underwater acoustic calibration; 9) revision of the previous informative annex on pulsed techniques in free-field calibrations (now Annex E); 10) revision of the previous informative annex on assessment of uncertainty in the calibration of hydrophones (now Annex F); 11) deletion of the previous informative annex on equivalent circuit of the excitation system for calibration with a vibrating column; 12) addition of a new informative Annex G on derivation of the formulae for three-transducer spherical-wave reciprocity calibration; 13) addition of a new informative Annex H on calibration using travelling-wave tubes; 14) addition of a new informative Annex I on calibration of hydrophones using optical interferometry. 15) addition of a new informative Annex J on calibration in reverberant water tanks using continuous signals.

Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration of hydrophones

EN IEC 62127-1:2022 超声学 水听器 第1部分：医学超声场的测量和表征

IEC 62127-1:2022 is available as IEC 62127-1:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 62127-1:2022 specifies methods of use of calibrated hydrophones for the measurement in liquids of acoustic fields generated by ultrasonic medical equipment including bandwidth criteria and calibration frequency range requirements in dependence on the spectral content of the fields to be characterized. This document: - defines a group of acoustic parameters that can be measured on a physically sound basis; - defines a second group of parameters that can be derived under certain assumptions from these measurements, and called derived intensity parameters; - defines a measurement procedure that can be used for the determination of acoustic pressure parameters; - defines the conditions under which the measurements of acoustic parameters can be made using calibrated hydrophones; - defines procedures for correcting for limitations caused by the use of hydrophones with finite bandwidth and finite active element size, and for estimating the corresponding uncertainties. IEC 62127-1:2022 cancels and replaces the first edition published in 2007 and Amendment 1:2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition. a) The upper frequency limit of 40 MHz has been removed. b) Hydrophone sensitivity definitions have been changed to recognize sensitivities as complex-valued quantities. c) Procedures and requirements for narrow-band approximation and broadband measurements have been modified; details on waveform deconvolution have been added. d) Procedures for spatial averaging correction have been amended. e) Annex D, Annex E and bibliography have been updated to support the changes of the normative parts.

Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields

EN IEC 60645-6:2022 电声学 测听设备 第6部分：耳声发射测量仪器

IEC 60645-6:2022 is available as IEC 60645-6:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 606045-6:2022 applies to instruments designed primarily for the measurement of otoacoustic emissions in the human external auditory meatus evoked by acoustic probe stimuli. This document defines the characteristics to be specified by the manufacturer, specifies minimum mandatory functions for two types of instruments and provides performance specifications applicable to both instrument types. This document describes methods to be used to demonstrate conformance with the specifications in this document and guidance on methods for periodic calibration. The purpose of this document is to ensure that measurements made under comparable test conditions with different instruments complying with this document will be consistent. Instruments can provide a measurement function not specifically within the scope of this document and still comply with the relevant requirements of this document for the functions that are within the scope. This document is not intended to restrict development or incorporation of new features, nor to discourage innovative approaches. IEC 606045-6:2022 cancels and replaces the first edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the nominal test frequency used in DPOAE is now defined as the higher of the two frequencies, f2; b) the permitted deviation of the stimulus signal for TEOAE has been specified; c) the frequency range for DPOAE stimulus signals has been redefined, d) the stimulus level requirements for TEOAE have been redefined; e) the stimulus level requirements for DPOAE have been redefined; f) the harmonic distortion requirements for DPOAE have been redefined; g) a minimum measurement range for DPOAE has been added.

Electroacoustics - Audiometric equipment - Part 6: Instruments for the measurement of otoacoustic emissions

EN IEC 60118-16:2022 电声学-助听器-第16部分：助听器特性的定义和验证

This part of IEC 60118 gives definitions for common hearing aid features such as noise reduction or feedback reduction, etc. Only acoustical inputs are considered. Binaural features are currently not covered in this document. In addition, measurement procedures are described to verify hearing aid features. The objective is not to evaluate the performance of features but to verify their existence and functionality. Furthermore, definitions and procedures are kept as general as possible so that this document can be applied to various types of hearing aids, e.g. air conduction hearing aids or bone conduction hearing aids. To this end, the general definition for hearing aid of IEC 60118-0:2015 is adopted, and this document does not refer to any specific ear simulator or acoustic coupler but uses a general definition of a coupler. However, if a general view is not applicable or leads to unclear or complex wording, the situation for an air conduction hearing aid is considered, only. Nevertheless, in Clause 4, an explanation is given on how this document can be applied to hearing aids which do not use air conduction.

Electroacoustics - Hearing aids - Part 16: Definition and verification of hearing aid features

IEC 60318-8:2022 电声学.人头和耳朵模拟器.第8部分:通过耳塞连接到耳朵的助听器和耳机的高频测量用声耦合器

Electroacoustics - Simulators of human head and ear - Part 8: Acoustic coupler for high-frequency measurements of hearing aids and earphones coupled to the ear by means of ear inserts

IEC 62127-1:2022 超声学水听器第1部分:医用超声场的测量和表征

Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields

IEC 62127-1:2022 RLV 超声学水听器第1部分:医用超声场的测量和表征

Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields

IEC 60118-16:2022 电声学助听器第16部分:助听器特性的定义和验证

Electroacoustics - Hearing aids - Part 16: Definition and verification of hearing aid features

IEC 60645-6:2022 RLV 电声学测听设备第6部分:耳声发射测量仪器

Electroacoustics - Audiometric equipment - Part 6: Instruments for the measurement of otoacoustic emissions

IEC 60645-6:2022 电声学测听设备第6部分:耳声发射测量仪器

Electroacoustics - Audiometric equipment - Part 6: Instruments for the measurement of otoacoustic emissions