17.140.50 电声学 标准查询与下载

GB/T 25498.1-2010 电声学 人头模拟器和耳模拟器 第1部分：校准压耳式耳机用耳模拟器

GB/T 25498的本部分规定了用于校准听力测定和电话电声测量用无声泄漏压耳式耳机的耳模拟器结构和特性。本部分规定的耳模拟器其频带范围为20Hz～10000Hz。

Electroacoustics.Simulators of human head and ear.Part 1:Ear simulator for the calibration of supra-aural earphones

GB/T 3241-2010 电声学 倍频程和分数倍频程滤波器

本标准规定了组成滤波器组或谱分析仪的模拟的、取样数据和数字方法得到的带通滤波器的性能规范和测试方法。对于给定宽带的所有滤波器，由滤波器的相对衰减特性确定的通带范围是中心频率的恒定的百分数。符合本标准要求的仪器可以包含覆盖任何所需频率范围的任何数目的带通滤波器。 本标准适用于三种等级的滤波器，0级，1级和2级的性能要求，其允差随等级的增加而增加。

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

GB/T 25102.4-2010 电声学 助听器 第4部分:助听器用感应回路系统磁场强度

本部分规定了对助听器用音频感应回路系统磁场强度的要求,目的是确保其在助听器不过载的情况下提供适当的信品比。 本部分还规定了可接受的清晰度所要求的最小频响范围。 本部分规定了测量磁场强度的方法,并给出了适用的测试设备的相关资料(见附录B)、应提供给系統操作者和使用者的资料(见附录C)以及其他重要事项。 本部分适用于可产生音频交变磁场,并能为装有感应拾音线圈的助听器提供输入信号的音频感应回路系统。 本部分对回路驱动放大器以及相关的传声器或音频信号源未作规定,对于如在ITU-TP.370 范畴内的电话机手柄之类设备产生的磁场强度的要求也未作规定。

Electroacoustics.Hearing aids.Part 4:Induction loop systems for hearing aid purposes.Magnetic field strength

GB/T 14199-2010 电声学 助听器通用规范

本标准规定了助听器的技术要求、测量方法、检验规则、标志、包装、运输和贮存。 本标准适用于气导和骨导助听器。

Electroacoustics.General specification for hearing aids

GB/T 3785.1-2010 电声学 声级计 第1部分：规范

1.1本部分给出了下列三种声测量仪器的电声性能规范： —测量指数时间计权声级的常规声级计； -测量时间平均声级的积分平均声级计； —测量声暴露级的积分声级计。 一台仪器可以进行上述任一种或三种测量。最大时间计权声级测量和峰值C声级测量是作为附加性能要求给出的。本部分规定的所有声级计必须具有A频率计权。 1.2满足本部分的声级计，当声音从自由声场中某一参考方向或无规方向入射到传声器时，应具有一种规定的频率响应。 1.3本部分规定的声级计是用于测量人耳听觉范围的声音。 1.4本部分规定声级计按性能分为两级：1级和2级。通常，l级和2级声级计的规范有相同的设计目标，主要是允差极限和工作温度范围不同。2级规范的允差极限大于或等于1级规范。 1.5本部分适用于多种形式的声级计。声级计可以是自身包含传声器和显示器的手持式仪器，也可以是由一个或多个分开的组件组成，并可显示多种声信号级的仪器。声级计可以包括扩展的模拟和数字信号处理器，它们可以是分开的，也可以是组合的，可以具有多路模拟和数字输出。声级计可以包括通用计算机、记录仪、打印机和其他必要的设备。 1.6声级计可以设计成由使用者在场操作，也可以是使用者不在场自动和连续测量声级。本部分对声 波响应的要求是操作者不在声场中的情况下提出的。

Electroacoustics-Sound level meters- Part 1:Specifications

GB/T 25102.2-2010 电声学 助听器 第2部分:具有自动增益控制电路的助听器

1.1 本部分规定了具有自动增益控制的助听器的动态工作特性和稳态工作特性及其测量方法。 本部分只规定各种不同特性及相关测量方法,没有规定各性能指标。 本部分适用于具有自动增益控制电路的各种类型的助听器。 1.2 本部分包括对于输入信号的包络具有压缩或限幅功能的装置,还包括长时间平均输出控制的装置。 a)采用自动增益控制电路压缩或减少输出声压的动态范围,以保持输出信号的完整性。 b)通常采用自动增益控制电路代替削峰装置进行限幅。 当输入信号较大时,输入/输出特性会趋于平直。 限幅装置的主要作用是防止助听器输出过大的聲音進入呈者耳朵,。 1.3 本部分不包括: a)扩展器。 b)限幅装置。 限幅装置不同于自动增益控制电路,限幅装置削去高于一定电平的信号峰值。 而自动增益控制电路,在稳态时能保持输入信和号波形不变。 注:具有很短的恢复时间的自动增益控制电路,可能会引起不可忽视的失真,特别是低频范围内,对此,宜特别关注。

Electroacoustics.Hearing aids.Part 2:Hearing aids with automatic gain control circuits

GB/T 25102.100-2010 电声学 助听器 第0部分：电声特性的测量

本标准规定了采用自由场技术和用耳模拟器测定气导助听器物理性能特性的方法。 本标准适用于气导助听器电声特性的测量。

Electroacoustics.Hearing aids.Part 0:Measurement of electroacoustical characteristics

GB/T 3785.2-2010 电声学 声级计 第2部分：型式评价试验

本部分规定了验证常规声级计、积分平均声级计和积分声级计符合GB/T 3785.1-2010给出的所有必达的规范所需试验的细节。 本部分适用于多通道声级计的每个通道。试验和试验方法适用于1级和2级声级计。其目的是确保所有的检测实验室能采用一致的方法执行型式评价试验。

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

GB/T 25102.1-2010 电声学 助听器 第1部分:具有感应拾音线圈输入的助听器

本部分规定了在音频磁场中使用的装有感应拾音线圈的助听器的电声性能测定方法。感应拾音线圈特性是在使用的房间中模拟回路工作状态进行测量。

Electroacoustics.Hearing aids.Part 1:Hearing aids with induction pick-up coil input

GB/T 15173-2010 电声学 声校准器

本标准规定了3个级别声校准器的性能要求，实验室标准(LS级)、1级和2级。 本标准不包括等效自由场声压级或无规入射声压级的要求，它们可用于声级计总灵敏度调节。

Electroacoustics.Sound calibrators

GB 9706.9-2008 医用电气设备.第2-37部分:超声诊断和监护设备安全专用要求

增加： 本专用标准规定了2.1.145所定义的超声诊断设备的专用安全要求。 本标准不包括超声治疗设备；然而与治疗装置连接在一起、使用超声对人体组织成像的设备包括在内。

Medical electrical equipment.Part2-37:Particular requirements for the safety of ultrasonic medical diagnosetic and monitoring equipment

GB/T 15261-2008 超声仿组织材料声学特性的测量方法

本标准规定了超声仿组织材料声学特性参数的测量方法。 本标准适用于超声仿组织材料密度及其在1MHz～1OMHz频率范围内声速、声衰减系数和背向散射系数的测量，该类材料主要用于制作超声体模。

Measurement methods for acoustic properties of ultrasonically tissue-mimicking materials

GB/T 20441.4-2006 测量传声器 第4部分:工作标准传声器规范

GB/T 20441的本部分适用于工作标准传声器。 本部分规定了测量系统中用于测定声压的工作标准传声器的机械尺寸和电声特性，这些传声器可用作声学测量仪器校准中的传递标准。 本部分规定了工作标准传声器的分类方法，根据尺寸和性能将传声器分为几种类型，以便于规范测量系统、用声校准器来校准测量系统和传声器，以及测量和校准系统中传声器的互换性。 本部分对工作标准传声器的换能原理不作说明。

Measurement microphones. Part 4: Specifications for working standard microphones

GB/T 14199-1993 盒式助听器总技术条件

本标准规定了气导盒式助听器的基本电声技术参数和测量方法、测试条件、环境试验及检验规则等。 本标准适用于气导盒式助听器（以下简称助听器）。

General specification for pocket hearing aids

FprEN IEC 63305:2023 水下声学 频率范围 5 Hz 至 10 kHz 的声波矢量接收器的校准

IEC 63305:2024 specifies methods and procedures for calibration of vector receivers in the frequency range 5 Hz to 10 kHz, which are applicable to vector receivers based on the two different principles. In addition, it describes an absolute method of inertial vector receiver calibration in air using optical interferometry. Usually, acoustic wave vector receivers are designed and constructed based on one of two principles. One is the sound pressure difference (gradient) principle. When measuring with this sensor, the vector receiver is rigidly fixed on a mount and supported in water. The other is the co-vibrating (inertial) principle. When measuring with this sensor, the vector receiver is suspended on a mount and supported in water in a non-rigid manner, which allows the vector receiver co-vibrate in the same direction as the sound particle in the sound wave field. Many methods have been used to calibrate vector receivers, such as free-field calibration, calibration in standing wave tube and calibration in a travelling wave tube.

Underwater acoustics - Calibration of acoustic wave vector receivers in the frequency range 5 Hz to 10 kHz

GSO IEC 62127-3:2024 超声波 水听器 第3部分：超声场水听器的特性

IEC 62127-3:2022 is available as IEC 62127-3:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 62127-3:2022 specifies relevant hydrophone characteristics. This document is applicable to: - hydrophones employing piezoelectric sensor elements, designed to measure the pulsed and continuous wave ultrasonic fields generated by ultrasonic equipment; - hydrophones used for measurements made in water; - hydrophones with or without an associated pre-amplifier. IEC 62127-3:2022 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 to determine the effective hydrophone size have been changed according to the rationale outlined in Annex B. d) Requirements on the frequencies for which the effective hydrophone size shall be provided have been changed to achieve practicality for increased frequency bands. e) The new Annex B and Annex C have been added. f) Annex A has been updated to reflect the changes of the normative parts.

Ultrasonics - Hydrophones - Part 3: Properties of hydrophones for ultrasonic fields

GSO IEC 62127-1:2024 超声波 水听器 第1部分：医用超声波场的测量和表征

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

GSO IEC 60500:2024 水下声学 水听器 水听器在 1 Hz 至 500 kHz 频率范围内的特性

IEC 60500:2017 specifies the relevant characteristics and properties of hydrophones in the frequency range 1 Hz to 500 kHz, and specifies how to report these characteristics. Provides guidance on the choice of a hydrophone with appropriate performance for a specific application. This standard is applicable to: - hydrophones employing piezoelectric sensor elements, designed to respond to sound pressure in water and measure underwater acoustical signals; - hydrophones with or without an integral pre-amplifier. This new edition includes the following significant technical changes with respect to the previous edition: - the format and scope of IEC 60500 have been changed to be compatible with other IEC standards; - the upper limit of the frequency range of hydrophones has been expanded.

Underwater acoustics - Hydrophones - Properties of hydrophones in the frequency range 1 Hz to 500 kHz

GSO IEC 60565-2:2024 水下声学 水听器 水听器校准 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

T/CARD 045-2023 助听器验配机构建设指南

本文件给出了助听器验配机构的服务能力、场地条件、设备条件、人员条件、设备校准及档案管理的建议。本文件适用于各类助听器验配机构。

Hearing aid fitting institution construction guide