17.140.50 电声学 标准查询与下载
共找到 947 条与 电声学 相关的标准，共 64 页
Hearing aids — Part 10: Guide to hearing aid standards
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-28
- 实施
Hearing aids — Part 1: Hearing aids with induction pick-up coil input
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-28
- 实施
Hearing aids — Part 2: Hearing aids with automatic gain control circuits
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-28
- 实施
Hearing aids — Part 6: Characteristics of electrical input circuits for hearing aids
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-28
- 实施
Hearing aids — Part 9: Methods of measurement of characteristics of hearing aids with bone vibrator output
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-28
- 实施
Hearing aids — Part 11: Symbols and other markings on hearing aids and related equipment
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-28
- 实施
Ultrasonics — Pulsed Doppler diagnostic systems —Test procedures to determine performance
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-28
- 实施
Hearing aids — Part 10: Guide to hearing aid standards
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-28
- 实施
Hearing aids — Part 5: Nipples for insert earphones
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-28
- 实施
Ultrasonics — Pulsed Doppler diagnostic systems —Test procedures to determine performance
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-28
- 实施
本文件规定了个人声暴露计（以下简称声暴露计）的术语和定义、基本要求、技术要求、试验方法、检验规则、标志、包装、运输、贮存和质量承诺。 本文件适用于测量稳态的、间断的、波动的、不规则的或脉冲声的 A 计权声暴露的仪器，符合本标准规范的仪器指定佩带于人体上测量声暴露。
Personal sound exposure meters
- ICS
- 17.140.50
- CCS
- C401
- 发布
- 2020-12-23
- 实施
- 2020-12-31
Electroacoustics -- Octave-band and 1/N (fractional) -octave-band filters -- Part 1: Specifications
- ICS
- 17.140.50
- CCS
- A47
- 发布
- 2020-12-21
- 实施
Ultrasonics - Transducers - Definitions and measurement methods regarding focusing for the transmitted fields
- ICS
- 17.140.50
- CCS
- 发布
- 2020-12-15
- 实施
本文件规定了精密多功能数字声级计（以下简称声级计）的术语和定义、基本要求、技术要求、试验方法、检验规则、标志、包装、运输、贮存和质量承诺。 本文件适用于性能等级为 1 级，频率范围为 10Hz～20kHz 的声级计，内含噪声统计分析仪、倍频程滤波器和/或 1/3 倍频程滤波器等功能。
Multifunctional and digital precision sound level meters
- ICS
- 17.140.50
- CCS
- C401
- 发布
- 2020-11-30
- 实施
- 2020-12-31
Electroacoustics – Audiometric equipment – Part 3: Test signals of short duration
- ICS
- 17.140.50
- CCS
- 发布
- 2020-11-20
- 实施
- 2020-11-20
Scales and sizes for plotting frequency characteristics and polar diagrams (IEC 60263:2020)
- ICS
- 17.140.50
- CCS
- 发布
- 2020-11-16
- 实施
- 2020-11-16
Measurement method for assistive listening functionality (TA 16) (IEC 100/3479/CDV) (english version)
- ICS
- 17.140.50
- CCS
- 发布
- 2020-11-15
- 实施
- 2020-11-15
Ultrasonics－Focusing transducers－Definitions and measurement methods for the transmitted fields
- ICS
- 17.140.50
- CCS
- 发布
- 20201014
- 实施
- 20201014
What is BS EN IEC 60263 - Plotting frequency characteristics and polar diagrams about? BS EN IEC 60263 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.
Scales and sizes for plotting frequency characteristics and polar diagrams
- ICS
- 17.140.50
- CCS
- 发布
- 2020-09-30
- 实施
- 2020-09-30
Electroacoustics - Audiometric equipment - Part 3: Test signals of short duration
- ICS
- 17.140.50
- CCS
- 发布
- 2020-09-29
- 实施
