33.160.50 附件 标准查询与下载
共找到 329 条与 附件 相关的标准，共 22 页
本标准适用于插入式耳机，使该耳机能与插入耳道的耳模相配接。
Nipples for insert earphones
- ICS
- 33.160.50
- CCS
- M72
- 发布
- 1986-07-31
- 实施
- 1987-08-01
本标准规定了采用互易技术对标准电容传声器进行自由场校准的精密方法，其详细规定是各权威机构间校准比对的基础。 本标准仅适用于φ23.77mm电容传声器，由于对校准方法及影响校准准确度的诸因素作了详细介绍和分析，因此可以估算校准总准确度。
Precision method for free-field calibration of &U23.77mm standard condenser microphones by the reciprocity technique
- ICS
- 33.160.50
- CCS
- M72
- 发布
- 1986-06-18
- 实施
- 1987-05-01
IEC 63296-1:2021 specifies the methods for measuring the battery duration at defined sound pressure levels for continuous music playback of battery-powered loudspeaker equipment. A primary battery or secondary battery can be used as a power source for the loudspeaker and its composite equipment. In the case of composite equipment, this method for the measurement of battery duration can be applied under the condition of powered loudspeaker playback only.
Portable multimedia equipment - Determination of battery duration - Part 1: Powered loudspeaker equipment
- ICS
- 33.160.50
- CCS
- 发布
- 2024-04-25
- 实施
This document is applicable to active acoustic noise-cancelling headphones and earphones that have the function of reducing the ambient noise heard by the user by the level of the output sound from the transducer, which is generated by the ambient noise detection microphone and the noise reduction signal processing circuit. This document covers headphones and earphones to be worn over-the-ear or in-ear, all of which are referred to as "headphones" in this document. This document specifies the terms and definitions relating to battery duration of this type of headphones and the measurement and evaluation methods. The noise detection microphones are mounted in the body, on the surface, or on an accessory of the headphones. Signal-processing circuits are analogue and digital electronic circuits. This document does not deal with equipment intended for hearing protection. It is also not applicable to music players, recorders, etc. that have a noise-cancelling function. The battery duration measurement methods can be applied to headphones having no active noise-cancelling function.
Portable multimedia equipment. Determination of battery duration - Headphones and earphones with active noise-cancelling functions
- ICS
- 33.160.50
- CCS
- 发布
- 2024-01-31
- 实施
- 2024-01-31
本文件规定了蓝牙产品的射频样品规格、性能指标、测试条件、测试方法、数据处理和报告、质量控制等。
Bluetooth product radio frequency performance test method
- ICS
- 33.160.50
- CCS
- I659
- 发布
- 2023-12-28
- 实施
- 2024-01-05
Sound system equipment — Part 4: Microphones
- ICS
- 33.160.50
- CCS
- 发布
- 2023-12-19
- 实施
本文件规定了用于声压级不大于120 dB环境下的罩耳式有源抗噪耳机的技术要求、测试方法、检验规则、标志、包装、运输和贮存。 本文件适用于有线、动圈类罩耳式有源抗噪耳机（以下简称“耳机”）的设计、生产定型和检验。无线类罩耳式有源抗噪耳机的抗噪性能要求和测试方法可参考使用。
Active Anti-noise Circumaural Headset
- ICS
- 33.160.50
- CCS
- C398
- 发布
- 2023-09-26
- 实施
- 2023-10-10
本文件描述了工作于电声状态（音乐模式）的近耳开放式音频设备声学性能的测量方法。 本文件适用于工作于电声状态（音乐模式）的近耳开放式发声特点的音频设备。 本文件不适用于工作于通话状态（通话模式）的近耳开放式音频设备和无源设备。
Near-ear open audio devices—Measuring methods for acoustic performance
- ICS
- 33.160.50
- CCS
- C398
- 发布
- 2023-09-14
- 实施
- 2023-09-20
BS EN IEC 60268-7. Sound system equipment - Part 7. Headphones and earphones
- ICS
- 33.160.50
- CCS
- 发布
- 2023-08-15
- 实施
- 2023-08-15
本文件描述了应用于电声换能器防水膜模切件的声阻抗测量方法。 本文件适用于电声换能器的防水膜模切件声阻抗的测量，例如汽车、手机、耳机、电脑、麦克风、音响、虚拟现实设备、眼镜、音箱、屏幕、会议系统、无人机和其他智能穿戴等。
Test method for acoustic impedance of waterproof membrane die-cutting part for electro-acoustical transducer
- ICS
- 33.160.50
- CCS
- C398
- 发布
- 2023-01-04
- 实施
- 2023-02-16
本文件规定了微型扬声器用多孔吸声颗粒的结构特征、技术要求、试验方法、检验规则以及包装运输与贮存。 本文件适用于尺寸在0.1 μm～2000 μm且不同外观形貌的多孔吸声颗粒，微型扬声器其他尺寸的吸声颗粒可参考使用。
Porous sound-absorbing particles for microspeakers
- ICS
- 33.160.50
- CCS
- C398
- 发布
- 2022-12-27
- 实施
- 2023-02-15
Sound system equipment — Part 7: Headphones and earphones
- ICS
- 33.160.50
- CCS
- 发布
- 2022-06-20
- 实施
Sound system equipment — Part 7: Headphones and earphones
- ICS
- 33.160.50
- CCS
- 发布
- 2022-06-20
- 实施
BS EN IEC 63296-2. Portable multimedia equipment – Determination of battery duration - Part 2. Headphones and earphones with active noise cancelling functions
- ICS
- 33.160.50
- CCS
- 发布
- 2022-05-27
- 实施
- 2022-05-27
Portable multimedia equipment - Determination of battery duration - Part 1: Powered loudspeaker equipment (IEC 63296-1:2021)
- ICS
- 33.160.50
- CCS
- 发布
- 2021-10-29
- 实施
- 2021-10-29
Sound system equipment - Part 7: Headphones and earphones (german version)
- ICS
- 33.160.50
- CCS
- 发布
- 2021-10-01
- 实施
- 2021-10-01
This International Standard applies to transducers. However, if the electrical input terminals and the surface of the radiator are accessible, this standard can also apply to passive and active sound systems such as loudspeakers, headphones, TV-sets, multi-media devices, personal
Sound system equipment - Part 22: Electrical and mechanical measurements on transducers (IEC 60268-22:2020); German version EN IEC 60268-22:2020
- ICS
- 33.160.50
- CCS
- 发布
- 2021-10-00
- 实施
- 2021-10-01
Sound system equipment — Part 5: Loudspeakers
- ICS
- 33.160.50
- CCS
- 发布
- 2021-09-24
- 实施
Sound system equipment — Part 5: Loudspeakers
- ICS
- 33.160.50
- CCS
- 发布
- 2021-09-24
- 实施
