17.140.50 电声学 标准查询与下载

EN IEC 60263:2020 绘制频率特性和极坐标图的比例和尺寸

IEC 60263:2020 specifies standard aspect ratios for logarithmic or level characteristics expressed in decibels versus a logarithmic frequency axis and ranges for the radius of polar diagrams of level. Applications include hard copy printouts, electronic files (e.g., PDF files), scientific publications, screen displays in computer programs and apps, as well as graphs in standards. Informative examples of graphs that conform to the requirements in this document are found in Annex A. Although outside the scope of this document, graphs with a linear y-axis versus logarithmic frequency (e.g., phase, group delay, etc.) often accompany the standard aspect ratio graphs of level described in the normative part of this document. These are described in informative Annex B. IEC 60263:2020 cancels and replaces the third edition published in 1982. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the scope is expanded to include electronic files (e.g., PDF), scientific publications, graphs in other standards, and screen displays in programs and apps; b) a Terms and Definitions clause has been added; c) aspect ratios of 20 dB/decade, and 0,5, 1, 1,25, and 2,5 decades/decade have been added; d) ranges of 60 dB or 30 dB are specified for polar plots of absolute level; a 30 dB range is specified for polar plots of relative level; e) as most graphs are now computer generated, tolerances and sizes have been removed; f) all informative figures have been updated with contemporary examples; g) an informative annex with information about linear y-axis vs. logarithmic frequency has been added.

Scales and sizes for plotting frequency characteristics and polar diagrams

BS EN IEC 63045:2020 超声波 非聚焦短压力脉冲源 包括弹道压力脉冲源 领域特点

What is IEC 63045 about?   IEC 63045 is applicable to:   Therapy equipment using extracorporeally induced non-focused or weakly focused pressure pulses   Therapy equipment producing extracorporeally induced non-focused or weakly focused mechanical energy   where the pressure pulses are released as single events of duration up to 25 μs.   IEC 63045 specifies:

Ultrasonics. Non-focusing short pressure pulse sources including ballistic pressure pulse sources. Characteristics of fields

EN IEC 63045:2020 超声波 非聚焦短压力脉冲源，包括弹道压力脉冲源 场的特征

IEC 63045:2020 is applicable to – therapy equipment using extracorporeally induced non-focused or weakly focused pressure pulses; – therapy equipment producing extracorporeally induced non-focused or weakly focused mechanical energy, where the pressure pulses are released as single events of duration up to 25 µs. This document does not apply to – therapy equipment using focusing pressure pulse sources such as extracorporeal lithotripsy equipment; – therapy equipment using other acoustic waveforms like physiotherapy equipment, low intensity ultrasound equipment and HIFU/HITU equipment. This document specifies – measurable parameters which are used in the declaration of the acoustic output of extracorporeal equipment producing a non-focused or weakly focused pressure pulse field, – methods of measurement and characterization of non-focused or weakly focused pressure pulse fields. This document has been developed for equipment intended for use in pressure pulse therapy, for example therapy of orthopaedic pain like shoulder pain, tennis elbow pain, heel spur pain, muscular trigger point therapy, lower back pain, etc. It is not intended to be used for extracorporeal lithotripsy equipment (as described in IEC 61846), physiotherapy equipment using other waveforms (as described in IEC 61689) and HIFU/HITU equipment (see IEC 60601 2-62 and IEC TR 62649).

Ultrasonics - Non-focusing short pressure pulse sources including ballistic pressure pulse sources - Characteristics of fields

MT/T 1187-2020 煤矿用声级传感器

Sound level sensor for coal mines

T/SCMES 6-2020 掌上超声诊疗 仿肺组织体模 技术要求

本文件规定了掌上超声诊疗仿肺组织体模（以下简称体模）的术语和定义、结构型式、要求、试验方法、检验规则、标识、标签、使用说明书、包装、运输、贮存。 本文件适用于由超声仿肺组织材料、嵌埋于其中的靶标等组成的，用于对检测人体肺部组织情况的掌上超声诊疗设备进行性能测试的体模。

Technical requirements for ultrasonically lung-mimicking phantom

BS EN IEC 60565-1:2020 水下声学 水听器 水听器的校准 水听器自由场校准的程序

What is BS EN IEC 60565-1 - Hydrophones about? BS EN IEC 60565-1 is the first part of the BS EN IEC 60565 series of documents that 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 is covered within BS EN IEC 60565-1 : absolute calibration using the method of the transducer spherical-wave reciprocity, and relative calibration by comparison with a reference to the device which has already been the subject of an absolute calibration. The maximum frequency range of the methods specified in BS EN IEC 60565-1 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 of 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. BS EN IEC 60565-1 presents a description of the requirements for free-field calibration in terms of the test facility, equipment and instrumentation, signal processing, and frequency limitations. A description of achievable uncertainty and rules for the presentation of the...

Underwater acoustics. Hydrophones. Calibration of hydrophones - Procedures for free-field calibration of hydrophones

IEC 60263:2020 绘制频率特性和极坐标图的尺度和大小

Scales and sizes for plotting frequency characteristics and polar diagrams

EN IEC 60565-1:2020 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 stea

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

IEC 63045:2020 超声学.包括弹道压力脉冲源在内的非聚焦短压力脉冲源.场特性

Ultrasonics - Non-focusing short pressure pulse sources including ballistic pressure pulse sources - Characteristics of fields

IEC 60565-1:2020 水声.水听器.水听器的校准.第1部分:水听器的自由场校准程序

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

EN IEC 60118-13:2020 电声学 助听器 第13部分：移动数字无线设备电磁抗扰度的要求和测量方法

IEC 60118-13:2019 covers the relevant EMC phenomena for hearing aids. Hearing aid immunity to high frequency fields originating from digital wireless devices such as mobile phones was identified as one of the most relevant EMC phenomena impacting hearing aids. IEC 60118-13:2019 cancels and replaces the fourth edition published in 2016 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) it introduces a new measurement method and set of EMC requirements for hearing aids immunity to mobile digital wireless devices; b) generic EMC requirements for hearing aids are no longer included – should be covered by other standards as appropriate.

Electroacoustics - Hearing aids - Part 13: Requirements and methods of measurement for electromagnetic immunity to mobile digital wireless devices

IEC TR 63079:2017/AMD2:2020 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+AMD2:2020 CSV 听力环路系统（HLS）实施规程

Code of practice for hearing-loop systems (HLS)

KS C IEC 60500-2019 IEC标准水听器

IEC standard hydrophone

KS C IEC 61102-2019 使用水听器在 0.5 MHz 至 15 MHz 频率范围内测量和表征超声波场

Measurement and characterization of ultrasonic fields using hydrophones in the frequency range 0.5 MHz to 15 MHz

KS C IEC 61260-2019 电声学 倍频程和分数倍频程滤波器

Electroacoustics — Octave-band and fractional-octave-band filters

IEC TS 63081:2019 超声学.材料超声特性的表征方法

Ultrasonics - Methods for the characterization of the ultrasonic properties of materials

BS EN IEC 60118-9:2019 电声学 助听器.骨传导助听器性能特征的测量方法

What is BS EN IEC 60118 ‑ 9 – Electroacoustics hearing aids about?   BS EN IEC 60118 ‑ 9 specifies methods for the measurement of bone conduction hearing aid characteristics. The methods described produce a suitable basis for the exchange of information or for direct comparison of the electroacoustical characteristics of bone conduction hearing aids. These methods are chosen to be practical, and reproducible, and are based on selected fixed parameters.   The results obtained by the methods specified in BS EN IEC 60118 ‑ 9 express the performance under the conditions of measurement, however, the performance of the hearing aid under practical conditions of use will depend upon a number of factors (e.g. effective load impedance, environmental conditions, acoustical environment, etc.).   BS EN IEC 60118 ‑ 9 defines methods of measurement of characteristics of bone conduction hearing aids both for:

Electroacoustics. Hearing aids - Methods of measurement of the performance characteristics of bone conduction hearing aids

EN 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

IEC 60565-2:2019 specifies the methods for low frequency pressure calibration of hydrophones at frequencies from 0,01 Hz to several kilohertz depending on calibration method. IEC 60565-2:2019, together with IEC 60565-1, replaces the second edition of IEC 60565 published in 2006. This edition constitutes a technical revision. IEC 60565-2:2019 includes the following significant technical changes with respect to the previous edition. 1) IEC 60565 has been divided into two parts: • Part 1: Procedures for free-field calibration; • Part 2: Procedures for low frequency pressure calibration (this document). 2) A relative calibration method has been added to Clause 8: Calibration by piezoelectric compensation. 3) A relative calibration method has been added to Clause 11: Calibration by vibrating column. 4) Clause 12: Calibration by static pressure transducer, has been added. 5) Annex A: Equivalent circuit of the excitation system for calibration with a vibrating column, has been deleted. 6) Subclauses 9.6, 9.7 and 9.8 have been moved to form a new Annex A: Advanced acoustic coupler calibration methods.

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

EN 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

IEC 60118-9:2019 specifies methods for the measurement of bone conduction hearing aid characteristics. The methods described will produce a suitable basis for the exchange of information or for direct comparison of the electroacoustical characteristics of bone conduction hearing aids. These methods are chosen to be practical and reproducible and are based on selected fixed parameters. The results obtained by the methods specified in this document express the performance under the conditions of measurement; however, the performance of the hearing aid under practical conditions of use will depend upon a number of factors (e.g. effective load impedance, environmental conditions, acoustical environment, etc.). This document defines methods of measurement of characteristics of bone conduction hearing aids both for • transcutaneously coupled devices measured on a mechanical coupler, meeting the requirements of IEC 60318-6, and • bone coupled/bone anchored devices measured on a skull simulator. IEC 60118-9:2019 cancels and replaces the first edition published in 1985. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) includes bone coupled devices measured on a skull simulator; b) measurement frequency range increased to 8 000 Hz for bone coupled devices.

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