L31 电声器件 标准查询与下载

GB/T 41180-2021 听书机通用技术规范

本文件规定了听书机的技术要求、试验方法、检验规则及标志、包装、运输、贮存。 本文件适用于听书机,其他以听书为核心功能的便携式电子产品可参照使用。

General specification for the E-book reader

GB 11455-1989 不完全佩戴在听者身上的助听设备

Hearing aid equipment not entirely worn on the listener

GB/T 11453-1989 模拟实际工作条件下的助听器性能测量方法

本标准适用于测量助听器的性能。

Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions

GB/T 11455-1989 不完全佩戴在听者身上的助听设备

本标准的目的，是规定不完全佩戴在听者身上的助听设备总电声性能的测量方法，该设备用于弥补听力损伤者的听力。

Hearing aid equipment not entirely worn on the listener

GB/T 11452-1989 助听器标准的指南

本标准用于对现有各助听器国家标准的介绍与查目。测量不同类型的助听器要求采用不同的试验方法，因此需有指南以确保各国家标准的正确使用。此外，还有必要用此指南检查有关助听器的现有国家标准，并用作为这些国家标准中所用术语的词汇表。 本标准的目的系为各助听器的相应标准提供指南。文本包括术语词汇表及各标准的适用范围，提出具体的测量要求。根据最大饱和声压级给出助听器的分类方法。

Guide to hearing aid standards

GB/T 7614-1987 校准测听耳机用的宽频带型仿真耳

本标准所述的仿真耳的频率范围为20～10000Hz。它适用于校准戴在人耳上不形成声漏的贴耳式耳机，不适用于耳罩式耳机。

An artificial ear of wide band type for the calibration of earphones used in audiometry

GB/T 6832-1986 头戴耳机测量方法

本标准为头戴耳机测量方法。头戴耳机可以包括无源网络、无线声系统或与耳机组成一体的其它器件。本标准也适用于非头戴式耳机或单耳机。

Methods of measurement on headphones

DB43/T 2898-2023 模拟电阻检测技术方法

Analog resistance detection technology method

ISO 11904-2:2021 声学. 从接近耳朵的声源处测定声排放强度. 第2部分: 利用人体模型技术

This document specifies basic framework measurement methods for sound immission from sound sources placed close to the ear. These measurements are carried out with a manikin, equipped with ear simulators including microphones. The measured values are subsequently converted into corresponding free-field or diffuse-field levels. The results are given as free-field related or diffusefield related equivalent continuous A-weighted sound pressure levels. The technique is denoted the manikin technique. This document is applicable to exposure to sound from sources close to the ear, for example during equipment tests or at the workplace to sound from earphones or hearing protectors with audio communication facilities. This document is applicable in the frequency range from 20 Hz to 10 kHz. For frequencies above 10 kHz,

Acoustics - Determination of sound immission from sound sources placed close to the ear - Part 2: Technique using a manikin

BS EN IEC 60645-3:2020 电声学. 听力测定设备. 短时持续试验信号

Electroacoustics. Audiometric equipment. Test signals of short duration

DIN EN 61669:2018 电声学.助听器真耳声学性能特征的测量(IEC 61669-2015); 德文版本EN 61669-2016

This standard gives recommendations for the measurement and estimation of the real ear acoustical performance characteristics of air-conduction hearing aids and for the measurement of certain acoustic properties of the ear related to the application of hearing aids. Measurements of real-ear acoustical characteristics of hearing aids which apply non-linear or analytical processing techniques are valid only for the test signals used and conditions employed.

Electroacoustics - Measurement of real-ear acoustical performance characteristics of hearing aids (IEC 61669:2015); German version EN 61669:2016

BS EN IEC 60942:2018 电声学.音响校准器

Electroacoustics. Sound calibrators

DB44/T 2036-2017 声频功率放大器生产过程质量控制规范

本标准规定了声频功率放大器生产过程中文件和人员、元部件和材料、仪器设备、制造、检验、产品标识、包装、运输和贮存的控制要求。 本标准适用于声频功率放大器整个生产过程的质量控制。

Specifications for Quality Control of Audio Power Amplifier Production Process

DIN EN 300422-2:2017 无线传声器. 最高3 GHz的音频PMSE. 第2部分: B级接收器. 包含2014/53/EU指令第3.2条基本要求的协调标准(作为德国标准的英文版本EEN 300 422-2 V2.1.1 (2017-02)核准)

Wireless Microphones - Audio PMSE up to 3 GHz - Part 2: Class B Receivers - Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU (Endorsement of the English version EN 300 422-2 V2.1.1 (2017-02) as German standard

DIN EN 300422-3:2017 无线传声器. 最高3 GHz的音频PMSE. 第3部分: C级接收器. 包含2014/53/EU指令第3.2条基本要求的协调标准(作为德国标准的英文版本EN 300 422-3 V2.1.1 (2017-02)核准)

Wireless Microphones - Audio PMSE up to 3 GHz - Part 3: Class C Receivers - Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU (Endorsement of the English version EN 300 422-3 V2.1.1 (2017-02) as German standard

IEC TS 60318-7:2017 电声学.人类头部和耳朵的模拟器.第7部分:空气传导助听器测量用听觉的头部和躯干模拟器

This document, which is a Technical Specification, describes a head and torso simulator, or manikin, intended for the measurement of air-conduction hearing aids in the frequency range from 100 Hz to 16000 Hz. The manikin described in this document is intended for airborne acoustic measurements only. It is not suitable for measurements which depend upon vibration transmission paths such as bone conduction, or for measurements requiring the simulation of bone or tissue. This document specifies the manikin in terms of both its geometrical dimensions and its acoustical properties. Only manikins compliant with both sets of specifications are in conformance with this document. WARNING - It is acknowledged that devices conforming to this document are used as the basis for applications extending beyond this scope, for example the measurement of sound sources close to the ear or of hearing protection devices. In such cases, it is recommended that any necessary design variations are documented, and that a statistical analysis of the measurement data is carried out to determine the level of repeatability that can be achieved. It will also be necessary to assess the relevance of the measurements made with the head and torso simulator to the application in question.

Electroacoustics - Simulators of human head and ear - Part 7: Head and torso simulator for the measurement of air-conduction hearing aids

IEC 61672-2:2013/AMD1:2017 电声学.声级计.第2部分:型式评定试验.修改件1

Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests; Amendment 1

DIN EN 61094-3:2017 电声学.测量传声器.第3部分:用互易技术校准实验室标准传声器自由场的基本方法(IEC 61094-3-2016+COR1-2016);德文版本EN 61094-3-2016+AC-2017-01

Electroacoustics - Measurement microphones - Part 3: Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique (IEC 61094-3:2016 + COR1:2016); German version EN 61094-3:2016 + AC:2017-01

IEC 62127-2:2007/AMD2:2017 超音波学.水听器.第2部分:超音波场小于40 MHz的校准.修改件2

Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz

IEC 62127-2:2017 超音波学.水听器.第2部分:超音波场小于40 MHz的校准

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 by ultrasonic equipment; NOTE 2 Some hydrophones can have non-circular active elements, arising from slight deviations from a circular structure caused, for example by electrode structure, or conversely, the active elements can actually be squares. The clauses within this standard remain valid, although, in these cases, special attention should be paid to the directional response and to the effective radii of the active element through various axes of rotation; hydrophones with or without a hydrophone pre-amplifier.

Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz