L31 电声器件 标准查询与下载

SJ 20527.6-2003 微波组件.WFB2002型低噪声放大器详细规范

Microwave assembly Detail specification for model WFB2002 low noise amplifier

IEC 60268-16:2003 声系统设备.第16部分:用语音传输系数测定语音清晰度的目标额定功率

Defines objective methods for rating the transmission quality of speech with respect to intelligibility. The four methods, which are closely related, are referred to as the "STI", the "STITEL", the "STIPA" and the "RASTI" methods (see Clause 3).

Sound system equipment - Part 16: Objective rating of speech intelligibility by speech transmission index

IEC 60268-5:2003 声系统设备.第5部分:扬声器

Gives the characteristics to be specified and the relevant methods of measurement for loudspeakers using sinusoidal or specified noise or impulsive signals.

Sound system equipment - Part 5: Loudspeakers

NF C97-335:2003 麦克风的检测测.第5部分:用对比法进行标准工作麦克风的压力校准

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

IEC 61672-2:2003 电声学.声级计.第2部分:型式评定试验

This part of IEC 61672 provides details of the tests necessary to verify conformance to all mandatory specifications given in IEC 61672-1:2002 for conventional sound level meters, integrating-averaging sound level meters and integrating sound level meters. Pattern evaluation tests apply for each channel of a multi-channel sound level meter, as appropriate. Tests and test methods are applicable to class 1 and class 2 sound level meters. The aim is to ensure that all testing laboratories use consistent methods to perform pattern evaluation tests.

Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests

BS EN 61672-1:2003 电声学.声级计.规范

1 This standard gives electroacoustical performance specifications for three kinds of sound measuring instruments: - a conventional sound level meter that measures exponential time-weighted sound level; - an integrating-averaging sound level meter that measures time-average sound level; and - an integrating sound level meter that measures sound exposure level. A single instrument may make any, or all, of the three kinds of measurements. Additional performance specifications are given for the measurement of maximum time-weighted sound level and peak C sound level. Frequency-weighting A is mandatory for all sound level meters specified in this standard. 2 Sound level meters conforming to the requirements of this standard have a specified frequency response for sound incident on the microphone from one principal direction in an acoustic free field or from random directions. 3 Sound level meters specified in this standard are intended to measure sounds generally in the range of human hearing. NOTE For measurement of audible sound in the presence of ultrasound, the AU weighting, specified in IEC 61012 [1], may be applied. 4 Two performance categories, class 1 and class 2, are specified in this standard. In general, specifications for class 1 and class 2 sound level meters have the same design goals and differ mainly in the tolerance limits and the range of operational temperatures. Tolerance limits for class 2 specifications are greater than, or equal to, those for class 1 specifications. 5 This standard is applicable to a range of designs for sound level meters. A sound level meter may be a self-contained hand-held instrument with an attached microphone and a built-in display device. A sound level meter may be comprised of separate components in one or more enclosures and may be capable of displaying a variety of acoustical signal levels. Sound level meters may include extensive analogue or digital signal processing, separately or in combination, with multiple analogue and digital outputs. Sound level meters may include general-purpose computers, recorders, printers, and other devices that form a necessary part of the complete instrument. note:1 Numbers in square brackets refer to the bibliography. 6 Sound level meters may be designed for use with an operator present or for automatic and continuous measurements of sound level without an operator present. Specifications in this standard for the response to sound waves apply without an operator present in the sound field.

Electroacoustics - Sound level meters - Specifications

ASA S3.22-2003 助听器特征包括2007年4月错误规范

Specification of Hearing Aid Characteristics Includes April 2007 Erratum

Specification of Hearing Aid Characteristics Includes April 2007 Erratum

ANSI S3.22-2003 助听器特性的规范

Air conduction hearing-aid measurement methods suitable for specification and tolerance purposes. Includes output sound pressure level (SPL) with a 90-dB input SPL, full-on gain, frequency response, harmonic distortion, equivalent input noise, current dr

Specification of Hearing Aid Characteristics

DIN EN 61842:2002 语音传递用扩音器和耳机 (IEC 61842:2002); 德文版本 EN 61842:2002

This standard applies to the microphone part and earphone part of handsets, headsets or earsets for speech communications, and also to the microphone units and earphone units of built-in handsets, headsets or earsets. The object of this standard is to establish definitions relating to these electroacoustic transducers, and to standardize the characteristics to be specified and the relevant methods of measurement. This does not exclude the use of other methods of measurement which can be shown to give the same or more reliable results

Microphones and earphones for speech communications (IEC 61842:2002); German version EN 61842:2002

DIN EN 61669:2002 电声学.助听器真耳听觉特性测量设备 (IEC 61669:2001); 德文版本 EN 61669:2001

The document specifies the general requirements for test equipment designed for use in measuring the real-ear acoustical characteristics of hearing aids and describes the terminology used. The purpose of this International Standard is to ensure that measurements of real-ear acoustical characteristics of a hearing aid on a given human ear, performed with different test equipment which comply with this International Standard using methods described in ISO 12124, shall give substantially the same results.

Electroacoustic - Equipment for the measurement of real-ear acoustical characterics of hearing aids (IEC 61669:2001); German version EN 61669:2001

ISO 11904-1:2002 声学 确定靠近耳朵放置的声源的声音发射 第1部分：在真耳中使用麦克风的技术（MIRE 技术）

This part of ISO 11904 specifies basic framework measurement methods for sound immission from sound sources placed close to the ear. These measurements are carried out with miniature or probe microphones inserted in the ear canals of human subjects. The measured values are subsequently converted into corresponding free-field or diffuse-field levels. The results are given as free-field related or diffuse-field related equivalent continuous A-weighted sound pressure levels. The technique is denoted the microphone-in-real-ear technique (MIRE technique). This part of ISO 11904 is applicable to exposure from sources close to the ear, for example during equipment tests or at the workplace by earphones or hearing protectors with audio communication facilities. This part of ISO 11904 is applicable in the frequency range from 20 Hz to 16 000 Hz.

Acoustics - Determination of sound immission from sound sources placed close for the ear - Part 1: Technique using a microphone in a real ear (MIRE technique)

DIN ISO 12124:2002 助听器真耳听觉特性测量程序 (ISO 12124:2001)

The document specifies procedures and requirements for measuring the real-ear acoustical characteristics of hearing aids. Its purpose is to ensure that the measurements made on a given hearing aid on a given human ear and a given hearing aid, following the procedures described and using equipment complying with the requirements of IEC 61669, give substantially the same results.

Procedures for the measurement of real-ear acoustical characteristics of hearing aids (ISO 12124:2001)

JIS C 1514:2002 电声学.倍频带和分倍频带滤波器

1.1この規格は，アナログ，標本化データ及びディジタル動作によるフィルタセット，又はスペクトル分析器に組み込まれるバンドパスフィルタの性能要求事項，及び試験方法を規定する。フィルタの相対減衰特性の通過地帯の幅は，帯域幅の等しいすべてのフィルタで，中心周波数に対して定比である。この規格の要求事項に適合する機器は，任意の数のバンドパスフィルタを備えて，いかなる周波数範囲をもその測定範囲とすることができる。1.2クラス0，クラス1及びクラス2と表示する三つのクラスに対して，性能要求事項を規定する。許容差は，クラスの数字の増加に伴い大きくなる。1.3この規格の性能要求事項に適合するバンドパスフィルタは，測定システムの一部分であっても，特定の機器の主要部分であってもよいが，実時間で動作しなければならない。性能要求事項は，製造業者が選択したすべての設計方法に適用する。1.4この規格の要求事項に適合する機器は，例えば，間欠的及び定常的な時間変動の信号，広帯域及び離散的な周波数をもつ信号，長い継続時間及び短い継続時間の信号というような，様々な信号のスペクトル情報を提供する能力をもつ。これらの要求事項に適合するものであっても，原理の異なるフィルタでは，過渡的信号を加えた場合，異なる結果を与えることもある。備考 この規格の対応国際規格を，次に示す。なお，対応の程度を表す記号は，ISO/IEC Guide 21に基づき， IDT(一致している)，MOD（修正している），NEQ(同等でない)とする。

Electroacoustics -- Octave-band and fractional-octave-band filters

BS EN 61842:2002 语音通信用传声器和耳机

This standard applies to the microphone part and earphone part of handsets, headsets or earsets for speech communications, and also to the microphone units and earphone units of built-in handsets, headsets or earsets. The object of this standard is to establish definitions relating to these electroacoustic transducers, and to standardize the characteristics to be specified and the relevant methods of measurement. This does not exclude the use of other methods of measurement which can be shown to give the same or more reliable results.

Microphones and earphones for speech communications

NF C97-010/A1:2002 电声学.倍频带和分倍频带滤波器

Electroacoustics - Octave-band and fractional-octave-band filters.

NF S31-015:2002 电声学.助听器真耳声音特性测量仪

Electroacoustics - Equipment for the measurement of real-ear acoustical characteristics of hearing aids.

IEC 61672-1:2002 电声学.声级计.第1部分:规范

Gives electroacoustical performance specifications for three kinds of sound measuring instruments: a conventional sound level meter that measures exponential time-weighted sound level; an integrating-averaging sound level meter that measures time-average

Electroacoustics - Sound level meters - Part 1: Specifications

BS EN 61094-5:2002 测量传声器.用比较片做用工作标准传声器的压力校准方法

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

IEC 61842:2002 语音通信用传声器和耳机

This standard applies to the microphone part and earphone part of handsets, headsets or earsets for speech communications, and also to the microphone units and earphone units of built-in handsets, headsets or earsets. The object of this standard is to establish definitions relating to these electroacoustic transducers, and to standardize the characteristics to be specified and the relevant methods of measurement. This does not exclude the use of other methods of measurement which can be shown to give the same or more reliable results.

Microphones and earphones for speech communications

EIA SP5038-2002 环境试验方法的表现,电气连接器和插座在控制环境下应用的评论期届满

This standard establishes the test procedures and test sequences to be followed when evaluating the performance of electrical connectors and sockets used in controlled environments.

Enviromental Test Methodology for Assesing the performance of Electrical Connectors and Sockets Used in Controlled Environment Applications Comment Period Expires: February 3, 2003; ANSI/EIA-364-1000.01, TS-1000.01A