L31 电声器件 标准查询与下载
共找到 394 条与 电声器件 相关的标准，共 27 页
Hearing aids; part 4: magnetic field strength in audio-frequency induction loops for hearing aid purposes
- ICS
- CCS
- L31
- 发布
- 1984
- 实施
Hearing aids; part 2: hearing aids with automatic gain control circuit
- ICS
- CCS
- L31
- 发布
- 1984
- 实施
Hearing aids; part 1: hearing aids with induction pick-up coil input
- ICS
- CCS
- L31
- 发布
- 1984
- 实施
Hearing aids; part 0: measurement of electroacoustical characteristics
- ICS
- CCS
- L31
- 发布
- 1984
- 实施
Hearing aids. Part 1 : Hearing aids with induction pick-up coil input
- ICS
- 2462;0695
- CCS
- L31
- 发布
- 1983
- 实施
Occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts
- ICS
- CCS
- L31
- 发布
- 1983
- 实施
Gives uniform methods for specifying dynamic and static performance characteristics together with the relevant methods of measurement for these characteristics. Includes devices which have compression and/or limiting properties with respect to the envelo
Hearing aids. Part 2 : Hearing aids with automatic gain control circuits
- ICS
- 11.180.15
- CCS
- L31
- 发布
- 1983
- 实施
- 2015-07-03
Is applicable to symbols and markings for the purpose of identifying control settings and giving information regarding technical functions and characteristics. Defines markings for gain controls, output controls, tone controls, switches, selectors, pre-s
Hearing aids. Part 11 : Symbols and other markings on hearing aids and related equipment
- ICS
- 11.180.15
- CCS
- L31
- 发布
- 1983
- 实施
- 2006-10-16
Hearing aids. Part 8 : Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions
- ICS
- 11.180.15
- CCS
- L31
- 发布
- 1983
- 实施
Hearing aids. Part 7 : Measurement of performance characteristics of hearing aids for quality inspection for delivery purposes
- ICS
- 11.180.15
- CCS
- L31
- 发布
- 1983
- 实施
- 2005-10-26
Is applicable to devices which can be fitted to an earmould inserted into the ear canal. Defines those dimensions which are essential in order to ensure interchangeability of devices used with earmoulds or other attachments to the ear. The dimensions giv
Hearing aids. Part 5 : Nipples for insert earphones
- ICS
- 11.180.15
- CCS
- L31
- 发布
- 1983
- 实施
Describes the measurement of physical performance characteristics of air-conduction hearing aids based on a free-field technique and measured with an ear simulator. Establishes methods of measurement to assess the characteristics of hearing aids. This se
Measurement of electroacoustical characteristics
- ICS
- 11.180.15
- CCS
- L31
- 发布
- 1983
- 实施
- 2015-06-11
Describes a method of determining the overall electroacoustic performance of equipment, used in the rehabilitation of persons having impaired hearing. The methods specified give information on the measurement of parameters, such as frequency response, ai
Hearing aids. Part 3 : Hearing aid equipment not entirely worn on the listener
- ICS
- 11.180.15
- CCS
- L31
- 发布
- 1983
- 实施
Terminology for electro-acoustic devices
- ICS
- 17.140.50
- CCS
- L31
- 发布
- 1982-11-13
- 实施
- 1983-07-01
Generic specification for communication acoustic devices
- ICS
- 31.020
- CCS
- L31
- 发布
- 1981-10-01
- 实施
- 1981-10-01
Outline dimension series for acoustic devices for use in communication
- ICS
- 31.020
- CCS
- L31
- 发布
- 1981-10-01
- 实施
- 1981-10-01
Applies to systems intended to provide an input signal for these devices. Specifies a standard value of magnetic field strength and will give an adequate signal-to-noise ratio without overloading the device. The recommended value may also be applicable t
Hearing aids. Part 4 : Magnetic field strength in audio-frequency induction loops for hearing aid purposes
- ICS
- 11.180.15
- CCS
- L31
- 发布
- 1981
- 实施
- 2006-10-31
Describes a coupler for loading the earphone with a specified acoustic impedance when determining the physical performance characteristics, in the frequency range 200 Hz to 5 000 Hz, of air-conduction hearing aids. The coupler described is a development
IEC reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts
- ICS
- 11.180.15
- CCS
- L31
- 发布
- 1973
- 实施
- 2006-12-11
