L31 电声器件 标准查询与下载

BS EN 60318-2:1998 电声学.人头和耳模拟器.在超高频范围内测声耳机校正用间歇听力耦合器

This part of IEC 60318 specifies two different adapters and the removable conical ring to be used with the IEC 60318-1 ear simulator to provide an interim acoustic coupler for the calibration of certain audiometric earphones designed for use in the extended high-frequency range from 8 kHz up to 16 kHz. Environmental conditions for the calibration and use of the coupler are given in IEC 60318-1.

Electroacoustics - Simulators of human head and ear - An interim acoustic coupler for the calibration of audiometric earphones in the extended high-frequency range

NF C97-624:1998 助听器.第4部分:助听器用音频感应回路中的磁场强度

Hearing aids. Part 4 : magnetic field strength in audio-frequency induction loops for hearing aid purposes.

NF C97-624/A1:1998 NF EN 60118-4-1998的修改件1

Modification 1 of NF EN 60118-4-1998

NF C97-618-1:1998 电声学.人头部和耳朵模拟器.第1部分:超音响耳机校准用耳朵模拟器

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

NF C97-626:1998 助听器.第5部分:助听器用电输入回路的特性

HEARING AIDS. PART 6 : CHARACTERISTICS OF ELECTRICAL INPUT CIRCUITS FOR HEARING AIDS. (EUROPEAN STANDARD EN 60 118-6).

BS EN 60118-4:1998 助听器.助听用音频感应环路的磁场强度

Gives a standard value of magnetic field strength in audio-frequency induction loops for hearing aid purposes that will give an adequate signal-to-noise ratio without overloading the hearing aid.

Hearing aids - Magnetic field strength in audio-frequency induction loops for hearing aid purposes

DIN EN 60118-14:1998 助听器.第14部分:数字接口的规范

The document specifies the electrical and mechanical requirements for an interface device to allow a general-purpose control device such as a desktop computer to be connected to hearing aids, for the purpose of electrical setting of their parameters. It is restricted to the digital interface between the control device and the hearing aid. The specifications are for use in connection with hearing aids with parameters set by a direct electrical connection using a cable. They do not cover hearing aids with parameters controlled by radio frequency or infrared transmission, or any other wireless method of control.

Hearing aids - Part 14: Specification of a digital interface (IEC 60118-14:1998); German version EN 60118-14:1998

JIS C 6065:1998 音频、视频和类似的电子装置.安全要求

Audio, video and similar electronic apparatus -- Safety requirements

BS EN 166100:1998 电子元器件质量评定协调系统.分规范:表面声波(SAW)滤波器

This sectional specification applies to surface acoustic wave (SAW) filters as custom built products or as standard catalogue items whose quality is assessed on the basis of capability approval. It prescribes the preferred ratings and characteristics, with the appropriate tests and measuring methods contained in the generic specification EN 166 000, and gives the general performance requirements to be used in detail specifications for surface acoustic wave (SAW) filters. The concept of preferred values is in general directly applicable to standard catalogue items but does not necessarily apply to custom built products.

Harmonized system of quality assessment for electronic components - Sectional specification:surface acoustic wave (SAW) filters

BS EN 60318-1:1998 电声学.人头和耳模拟器.超级听力耳机校正用耳模拟器

Relates to ear simulators covering the frequency band 20 Hz to 10000 Hz.

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

IEC 60318-2:1998 电声学 人的头和耳模拟器 第2部分:在扩展的高频范围内测听力耳机校正用间歇听力耦合器

This part of IEC 60318 specifies two different adapters and the removable conical ring to be used with the IEC 60318-1 ear simulator to provide an interim acoustic coupler for the calibration of certain audiometric earphones designed for use in the extended high-frequency range from 8 kHz up to 16 kHz. Environmental conditions for the calibration and use of the coupler are given in IEC 60318-1.

Electroacoustics - Simulators of human head and ear - Part 2: An interim acoustic coupler for the calibration of audiometric earphones in the extended high-frequency range

IEC 60318-3:1998 电声学 人的头和耳模拟器 第3部分:用于听力测定计的超听力耳机校正用声耦合器

This International Standard describes an acoustic coupler for loading supra-aural audiometric earphones as specified in ISO 389-1 with a specified acoustic impedance, when calibrating audiometers, in the frequency range of 125 Hz to 8000 Hz. The sound pressure developed by an earphone is not, in general, the same in the coupler as in a person's ear. However, the IEC recommends its use as a simple and ready means for the exchange of specifications on audiometers and for the calibration of specified earphones used in audiometry. note: 1) To be published.

Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry

IEC 60118-1:1995/AMD1:1998 助听器.第1部分:感应拾音线圈输入的助听器.补充件1

This standard is Hearing aids - Part 1: Hearing aids with induction pick-up coil input; Amendment 1.

Hearing aids - Part 1: Hearing aids with induction pick-up coil input; Amendment 1

IEC 60318-1:1998 电声学 人的头和耳模拟器 第1部分:超级听力耳机的校正用耳模拟器

This International Standard relates to the specification of an ear simulator which covers the frequency band 20 Hz to 10000 Hz and is intended for calibrating supra-aural earphones used in audiometry and telephonometry applied to the ear without acoustical leakage. NOTE - This device is not intended for the calibration of circumaural earphones. However, IEC 60318-2 specifies an adaptor for use with this ear simulator to provide an interim acoustic coupler for the calibration of a circumaural audiometric earphone.

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

BS EN 60118-14:1998 助听器 数字接口设备的规范

Restricted to digital interface between control device and hearing aid with parameters set by direct electrical connection using a cable.

Hearing aids. Specification of a digital interface device

IEC 60118-4/AMD1:1998 助听器 第4部分:助听器的声频感应线圈中的磁场强度 修改1

Hearing aids - Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes; Amendment 1

DIN EN 60118-2:1998 助听器.第2部分:带自动增益控制电路的助听器

The document aims at the use of broad band input signals for the measurement of the characteristics of hearing aids employing automatic gain control. For this purpose, the characteristics of stochastic signals and test conditions are specified and the required measurements are described.#,,#

Hearing aids - Part 2: Hearing aids with automatic gain control circuits (IEC 60118-2:1983 + A1:1993 + A2:1997); German version EN 60118-2:1995 + A2:1997

SJ 20045/1-1998 ODK-1型抗噪声送话器详细规范

Detail specification of noise-cancelling transmitter for ODK-1

IEC TR3 60268-13:1998 声音系统设备.第13部分:扬声器上的听力试验

The recommendations in this report apply to loudspeakers intended for residential systems and environments. Although the procedures are specifically designed for loudspeakers which are separate sound system components for either monophonic, two-channel stereophonic or multichannel stereophonic reproduction, they may also be applied to other devices such as complete audio and television receivers with integrated sound. This report gives recommendations for establishing, conducting and evaluating listening tests on loudspeakers. Although various aspects are under continuing discussion, this report is intended to give the general guidelines. Certain aspects may vary – in particular, the listening room may reflect regional construction practices. The tests described in this report are to be performed in a room the size and acoustical properties of which are similar to those of an "average" living room. Specific recommendations about the room size, acoustical properties, arrangements of loudspeakers and listeners, and environmental conditions are given. This Technical Report describes experimental procedures, including recommendations on the choice of programme material and the processing and presentation of the final data. It may be useful, when applying the methods of this publication, to also consider some of the recommendations in AES 20, especially as concerns the range of perceptual attributes as listed in 5.2.2. It should be understood that the topics of experimental design, experimental execution, and statistical analysis are complex, and that only the most general guidelines can be given. It is recommended that professionals with expertise in experimental design and statistics should be consulted or brought in early in the planning of the listening test. The use of multi-channel formats, principally for domestic presentation of cinema, is becoming more widespread. The procedures described in this report are applicable to any number of channels of reproduction. Because of the rapidity with which the practices in this area are evolving, only the most general guidelines are given.

Sound system equipment - Part 13: Listening tests on loudspeakers

IEC 60118-14:1998 助听器 第14部分:数字接口装置的规范

This part of IEC 60118 specifies the electrical and mechanical requirements for an interface device to allow a general-purpose control device such as a desktop computer to be connected to hearing aids, for the purpose of electrical setting of their operating parameters. There is no specification of anything within the hearing aid, such as types of parameters and their signal processing characteristics, nor is there any specification of the parameter setting procedure - the method used to determine which settings are most appropriate to the person wearing the hearing aid. This standard is restricted to the digital interface between the control device and the hearing aid. This standard provides a specification such that all hearing aids which can be programmed by the specified digital interface may have their parameters set by a single control device and interface device. The specifications of this standard are for use in connection with hearing aids with parameters set by a direct electrical connection using a cable. They do not cover hearing aids with parameters controlled by radio frequency or infrared transmission, or any other "wireless" method of control.

Hearing aids - Part 14: Specification of a digital interface device