17.140.50 电声学 标准查询与下载

GSO IEC 60118-14:2014 助听器 第14部分：数字互连设备的技术规范

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

GSO IEC 60318-5:2014 电声学 人头和耳朵模拟器 第5部分：用于测量助听器和通过耳廓附件耦合到耳朵的助听器的 2 cm3 耦合器

This part of IEC 60318 describes an acoustic coupler for loading an earphone or hearing aid with a specified acoustic impedance when determining its physical performance characteristics, in the frequency range 125 Hz to 8 kHz. It is suitable for air conduction hearing aids and earphones, coupled to the ear by means of ear inserts e.g. ear moulds or similar devices. The sound pressure developed by an earphone is not, in general, the same in the coupler as in a person’s ear. However, it can be used as a simple and ready means for the exchange of specifications and of physical data on hearing aids and for the calibration of specified insert earphones used in audiometry.

Electroacoustics - Simulators of human head and ear - Part 5: 2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts

GSO IEC 61094-6:2014 声学测量仪器 第6部分：用于确定频率响应的静电执行器

This part of IEC 61094 – gives guidelines for the design of actuators for microphones equipped with electrically conductive diaphragms; – gives methods for the validation of electrostatic actuators; – gives a method for determining the electrostatic actuator response of a microphone. The applications of electrostatic actuators are not fully described within this standard but may include – a technique for detecting changes in the frequency response of a microphone, – a technique for determining the environmental influence on the response of a microphone, – a technique for determining the free-field or pressure response of a microphone without specific acoustical test facilities, by the application of predetermined correction values specific to the microphone model and actuator used, – a technique applicable at high frequencies not typically covered by calibration methods using sound excitation.

Measurement microphones - Part 6: Electrostatic actuators for determination of frequency response

GSO IEC 61094-3:2014 声学测量仪器 第3部分：通过交换技术对标准实验室声学进行自由场校准的主要方法

This part of IEC 1094 is applicable to laboratory standard microphones meeting the requirements of IEC 1094-1. The principles of the method are applicable to other types of microphones. In pa rticular, microphones which fulfil the requirements of IEC 1094-1, when fitted with a special adaptor, may also be calibrated according to this standard when the adaptor is removed. This part of IEC 1094 specifies a primary method of determining the free-field sensitivity so as to establish a reproducible and accurate basis for the measurement of sound pressure under free-field conditions. This part of IEC 1094 is intended for use by laboratories with highly experienced staff and specialized equipment.

Measurement microphones - Part 3: Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique

GSO IEC 61094-5:2014 声学测量仪器 第5部分：通过比较器对标准操作声学仪器进行压力校准的方法

This part of IEC 61094 is applicable to working standard microphones with removable protection grids meeting the requirements of IEC 61094-4 and to laboratory standard microphones meeting the requirements of IEC 61094-1. This part of IEC 61094 also describes methods of determining the pressure sensitivity by comparison with either a laboratory standard microphone that has been calibrated according to IEC 61094-2, or another working standard microphone that has been calibrated according to this part of IEC 61094. Alternative comparison methods based on the principles described in IEC 61094-2 are possible but beyond the scope of this part of IEC 61094.

Measurement microphones - Part 5: Methods for pressure calibration of working standard microphones by comparison

GSO IEC 60118-8:2014 电声学 助听器 第8部分：模拟操作条件下 [原位] 测量助听器性能特征的方法

The purpose of this part of IEC 60118 is to describe methods for a test which simulates the acoustical effects of a median adult wearer on the performance of a hearing aid. It establishes certain guidelines for simulated in situ measurements of hearing aids; it describes a simplified method for simulated in situ measurements of hearing aids and a description for determination of the directivity index (DI) of directional microphones in hearing aids in the horizontal plane. In addition this second edition now specifies tolerances. Conformance to the specifications in this International Standard is demonstrated only when the result of a measurement, extended by the actual expanded uncertainty of measurement of the testing laboratory, lies fully within the tolerances specified in this International Standard extended by the values for Umax

Electroacoustics - Hearing aids - Part 8: Methods of measurement of performance characteristics of hearing aids under simulated [in situ] working conditions

GSO IEC 61094-4:2014 声学测量仪器 第4部分：标准工作体积技术规范

This part of IEC 1094 is applicable to working standard microphones It specifies mechanical dimensions and certain electroacoustical characteristics for working standard microphones used in measuring systems for the determination of sound pressure to enable these microphones to be used as transfer standards in the calibration of acoustic measurement instruments. It establishes a system for classifying working standard microphones into a number of types according to their dimensions and properties in order to facilitate the specification of measurement systems, the calibration of measuring systems and microphones by sound calibrators, and the interchangeability of microphones in given measuring and calibration systems. It does not specify the transduction principle by which working standard microphones operate.

Measurement microphones - Part 4: Specifications for working standard microphones

GSO IEC 60118-12:2014 助听器 第12部分：导电系统尺寸

This International Standard applies to plugs and connector systems for hearing aids and specifies the dimensions and their tolerances essential for ensuring interchangeability.

Hearing aids - Part 12: Dimensions of electrical connector systems

GSO IEC 60118-2:2014 助听器 第2部分：具有自动增益控制功能的助听器

1.1 This standard applies to the hearing aids of any type with automatic gain control (AGC) circuits. This standard gives uniform, methods for specifying dynamic and static performance characteristics of hearing aids with AGC circuits together with the relevant methods of measurement for these characteristics. This standard is confined to a description of the different characteristics and the relevant methods of measurement. It does not attempt to specify performance requirements. 1.2 This standard includes devices which have compression and/or limiting properties with respect to the envelope of the input signal. Devices which control the long-term average output level are also included. a) AGC is employed to obtain compression, or the reduction of the dynamic range of the sound at the output, with the object of preserving the integrity of the input waveform. b) AGC circuits instead of clipping devices are often used for limiting purposes. A limiting effect occurs when the input/output characteristic flattens out at higher input levels. Limiting action is mainly used as a means of preventing excessive output sound from the hearing aid from reaching the listener's ear. 1.3 This standard does not include: a) Expanders. b) Clipping devices, which cut off the signal peaks above a certain level; such devices differ basically from AGC circuits, which, in a steady state, tend to preserve the waveform of the input signal. Note. – An AGC circuit with very short recovery time may cause considerable distortion, especially in the low-frequency range. This should be given special attention.

Hearing aids - Part 2: Hearing aids with automatic gain control circuits

GSO IEC 60645-5:2014 电声学 音频测量设备 第5部分：耳机输入/阻抗测量设备

This part of IEC 60645 applies to instruments designed primarily for the measurement of acoustic impedance/admittance in the human external acoustic meatus using a stated probe tone. It is recognized that other probe signals may also be used. The standard defines the characteristics to be specified by the manufacturer, lays down performance specifications for three types of instruments and specifies the facilities to be provided on these types. This standard describes methods of test to be used for approval testing and guidance on methods for undertaking routine calibration. The purpose of this standard is to ensure that measurements made under comparable test conditions with different instruments complying with the standard will be consistent. The standard is not intended to restrict development or incorporation of new features, nor to discourage innovative approaches.

Electroacoustics - Audiometric equipment - Part 5: Instruments for the measurement of aural acoustic impedance/admittance

GSO IEC 60118-4:2014 电声学 助听器 第4部分：助听器用感应环路系统 磁场强度

This part of IEC 60118 is applicable to audio-frequency induction-loop systems producing an alternating magnetic field at audio frequencies and intended to provide an input signal for hearing aids operating with an induction pick-up coil (telecoil). Throughout this standard, it is assumed that the hearing aids used with it conform to all relevant parts of IEC 60118. This standard specifies requirements for the field strength in audio-frequency induction loops for hearing aid purposes, which will give adequate signal-to-noise ratio without overloading the hearing aid. The standard also specifies the minimum frequency response requirements for acceptable intelligibility. Methods for measuring the magnetic field strength are specified, and information is given on appropriate measuring equipment (see Annex B), information that should be provided to the operator and users of the system (see Annex C), and other important considerations. This standard does not specif y requirements for loop driver amplifiers or associated microphone or audio signal sources, which are dealt with in IEC 62489-1, or for the field strength produced by equipment, such as telephone handsets, within the scope of ITU-T P.370.

Electroacoustics - Hearing aids - Part 4: Induction loop systems for hearing aid purposes - Magnetic field strength

GSO IEC 60645-2:2014 听力测定 第2部分：测量听力的设备

This part of IEC 645 specifies requirements for audiometers or parts thereof designed to provide a means of presenting speech sounds to a subject in a standardized manner, for example for the measurement of speech recognition. Audiometers are classified into four types: type A instruments provide a wide range of facilities, while type B provides only basic facilities. For both types, the audiometer may be calibrated in terms of a free-field equivalent output level of the earphones and then be des­ ignated as type A-E or B-E. This standard excludes the requirements for speech audiometers provided with frequency response adjustments intended to determine an optimal intelligibility frequency response curve for each subject. The purpose of this standard is to ensure that tests of hearing using speech as the test stimulus, on a given human ear performed with different audiometers which comply with this standard, shall give substantially the same results for a given calibration method. Two methods of specification, calibration and testing are given for the output levels generated by the earphones and the bone vibrator: a) a free-field equivalent output level method with audiometers of types A-E and B-E; b) an uncorrected coupler output level method with audiometers of types A and B. NOTE - The results will also depend on factors other than the audiometer for example test material, test room, speakers, etc.

Audiometers - Part 2: Equipment for speech audiometry

GSO IEC 60118-13:2014 电声学 助听器 第13部分：电磁兼容性

This part of IEC 60118 in principle covers all relevant EMC phenomena for hearing aids. EMC phenomena, such as RF emission and electrostatic discharge, are not currently known to be a significant problem in connection with hearing aids and are therefore not dealt with. Based on new knowledge, they could be considered in connection with future revisions or extensions of this standard. Hearing aid immunity to high frequency electromagnetic fields originating from digital wireless devices operating in the frequency ranges 0,8 GHz to 0,96 GHz and 1,4 GHz to 2,48 GHz is currently identified as the only relevant EMC phenomenon regarding hearing aids. Future editions of this part of IEC 60118 may add tests for other frequency bands, as they come into more common use. IEC 61000-4-3 is the basis for relevant EMC tests to be conducted on hearing aids. Measurement methods and acceptance levels are described in this part of IEC 60118. For the purpose of this part of IEC 60118, two immunity classes of hearing aids are defined (see 3.1) related to their use. "Bystander compatible" ensures that a hearing aid is usable in environments where digital wireless devices are in operation in the proximity of the hearing aid wearer. "User compatible" hearing aids ensures that a hearing aid is usable when the wearer is using a digital wireless device at the wearer’s own aided ear. Measurement methods for hearing aids with non-acoustic outputs and for hearing aids connected to other equipment by cables are not given in this standard.

Electroacoustics - Hearing aids - Part 13: Electromagnetic compatibility (EMC)

GSO IEC 61094-1:2014 声学测量仪器 第1部分：标准实验室声学技术规范

This part of IEC 61094 specifies mechanical dimensions and certain electroacoustic characteristics for condenser microphones used as laboratory standards for the realization of the unit of sound pressure and for sound pressure measurements of the highest attainable accuracy. The specifications are intended to ensure that primary calibration by the reciprocity method can be readily carried out. This part also establishes a system for classifying laboratory standard condenser microphones into a number of types according to their dimensions and properties in order to facilitate the specification of calibration methods, the conducting of inter-laboratory comparisons involving the calibration of the same microphones in different laboratories, and the interchangeability of microphones in a given calibration system.

Measurement microphones - Part 1: Specifications for laboratory standard microphones

GSO IEC 61260-1:2014 电声 T 波段和 T 波段滤波器 第1部分规格

1.1 This part of the IEC 61260 series specifies performance requirements for analogue, sampled-data, and digital implementations of band-pass filters. The extent of the pass-band region of a filter's relative attenuation characteristic is a constant percentage of the exact midband frequency for all filters of a given bandwidth. An instrument conforming to the requirements of this standard may contain any number of contiguous band-pass filters covering any desired frequency range. 1.2 Performance requirements are provided for two filter classes: class 1 and class 2. In general, specifications for class 1 and class 2 filters have the same design goals and differ mainly in the acceptance limits and the range of operational temperature. Acceptance limits for class 2 are greater than, or equal to, those for class 1. Maximum-permitted expanded uncertainties of measurement are also specified. 1.3 Performance requirements are given for designs where the octave frequency ratio and the mid-band frequencies are powers of ten. 1.4 Band-pass filters conforming to the performance requirements of this standard may be part of various measurement systems or may be an integral component of a specific instrument such as a spectrum analyser. 1.5 This standard specifies the ranges of environmental conditions for operation of the filters. The required range depends on whether the instrument containing the filters is designed to be operated in a controlled environment or more generally in the field. 1.6 Band-pass filters conforming to the requirements of this standard are capable of providing frequency-band-filtered spectral information for a wide variety of signals, for example, time-varying, intermittent or steady; broadband or discrete frequency; and long or short durations.

Electroacoustics - Octave-band and fractional-octave-band filters-Part 1: Specifications

GSO IEC 60118-7:2014 电声学 助听器 第7部分：测量助听器的性能特征 以确保高质量的生产、供应和交付

This part of IEC 60118 gives recommendations for the measurement of the performance characteristics of air-conduction hearing aids of a particular model for production, supply and delivery quality assurance purposes. The manufacturer will normally assign nominal values. This standard does not relate to mechanical or environmental tests. It should not be used as the basis for the exchange of information about hearing aid characteristics in general, nor is it intended to be used as a predictor for real-ear performance. NOTE Terms such as "manufacturer" and "purchaser" are used in this standard. These terms may be understood, however, to refer to the supplier and recipient respectively in any arrangement for the supply of hearing aids in which the use of this standard is called for. Though the number of measurements covered by this standard is limited, it is not intended that all measurements described herein shall be made in every case. This second edition now specifies performance requirements. Conformance to the specifications in this standard is demonstrated only when the result of a measurement, extended by the actual expanded uncertainty of measurement of the testing laboratory, lies fully within the tolerances specified in this standard extended by the values for Umax given in Table 4. In case of custom-made in-the-ear instruments, the data supplied by the manufacturer applies only to the particular hearing aid being tested.

Electroacoustics - Hearing aids - Part 7: Measurement of the performance characteristics of hearing aids for production, supply and delivery quality assurance purposes

GSO IEC 61157:2014 用于确定医用超声诊断设备声输出的标准方法

This International Standard is applicable to medical diagnostic ultrasonic equipment. – It provides a set of traceable acoustic parameters describing the acoustic fields. – It defines a standard means and format for the reporting of the acoustic output information. – It also describes a reduced dataset recommended for equipment generating low acoustic output levels. NOTE The information tabulated in this standard format can be used for a) exposure planning for biological effects studies; b) exposure data for prospective epidemiological studies conducted using exposure conditions similar to those reported in this standard. In the absence of actual exposure data for retrospective epidemiological studies, the information tabulated in this standard format might also be used with cautionary comment.

Standard means for the reporting of the acoustic output of medical diagnostic ultrasonic equipment

GSO IEC 60118-9:2014 听力增强设备 第9部分：骨振动输出助听器性能特征的测量方法

This standard specifies methods of measurement of the characteristics of hearing aids using bone vibrator output.

Hearing aids. Part 9: Methods of measurement of characteristics of hearing aids with bone vibrator output

GSO IEC 60318-3:2014 电声学 人头和耳朵模拟器 第3部分：用于校准测听中使用的贴耳式耳机的声耦合器

This part of IEC 60318 specifies an acoustic coupler for the measurement of supra- aural audiometric earphones in the frequency range from 125 Hz to 8 000 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 acoustic coupler can be used as an objective and reproducible means of measuring the output of supra-aural earphones. It can be used for specif ying reference equivalent threshold sound pressure levels (RETSPL) for the calibration of audiometers.

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

GSO IEC 60118-6:2014 助听器 第6部分：助听器电气输入电路的特性

This part of IEC 60118 specifies the electrical and safety characteristics of a circuit for an external electrical input to a personal hearing aid in order to ensure compatibility with external electrical or electroacoustic signal sources. In this standard, the hearing aid may include an adaptor (audio shoe) which incorporates connector systems described in IEC 60118-12.

Hearing aids - Part 6: Characteristics of electrical input circuits for hearing aids