M72 音响、电声设备 标准查询与下载

BS EN 61305-2:1998 家用高保真音频设备和系统 测量和指定性能的方法 FM 收音机调谐器

Specifies the characteristics and methods of measurement for systems and multiple function equipment for FM sound broadcast reception using a rated maximum system deviation of +/- 75 kHz or +/-50 kHz. To be read in conjunction with BS EN 61305-1:1995

Household high-fidelity audio equipment and systems. Methods of measuring and specifying the performance. FM radio tuners

IEC 60268-16:1998 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

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

IEC 61883-1:1998 用户音频/视频设备.数字界面.第1部分:概述

Consumer audio/video equipment - Digital interface - Part 1: General

IEC 60849:1998 应急用声系统

This International Standard applies to sound reinforcement and distribution systems to be used to effect a rapid and orderly mobilization of occupants in an indoor or outdoor area in an emergency situation. This standard applies to systems using tone signals and to systems with voice announcements for emergency purposes. NOTE 1 - The use of the system for normal sound reinforcement and distribution systems purposes under non-hazardous circumstances is not excluded. NOTE 2 - It is recommended that the system, when used for emergency purposes, should form part of a complete facility (equipment, operating procedures and training programmes) for the control of emergencies. NOTE 3 - Sound systems for emergency purposes may be the subject of approval by relevant authorities.

Sound systems for emergency purposes

IEC 61883-5:1998 用户音频/视频接口 数字接口 第5部分:SDL-DVCR数据传输

Consumer audio/video equipment - Digital interface - Part 5: SDL-DVCR data transmission

IEC 61883-3:1998 用户音频/视频设备 数字接口 第3部分:HD-DVCR数据传输

Consumer audio/video equipment - Digital interface - Part 3: HD-DVCR data transmission

IEC 61883-2:1998 用户音频/视频设备 数字接口 第2部分:SD-DVCR数据传输

Consumer audio/video equipment - Digital interface - Part 2: SD-DVCR data transmission

ANSI/EIA 426-B:1998 全频程额定功率的扬声器

This standard defines test methods and criteria of acceptability for testing the performance of a loudspeaker or loudspeaker system designed for consumer use within defined limits in the areas of power compression,harmonic distortion,and accelerated life testing,when operated at or below the optimum amplifier power.Guidelines for using this standard to establish p power rating for a product are presented in Annex C(informative).Loudspeakers are to be tested as they are intended to be used.Transducers are to be tested either on a test baffle (see Annex B(normative))or in the enclosure recommended by the manufacturer;manufacturer's stated ratings must clearly specify any such enclosure.No external crossover network shall be used except as specified by the manufacturer.Systems provided with enclosures and/or crossover networks are to be tested with crossover networks and enclosures intact,unless otherwis specified by the manufacturer.

Loudspeakers, Power Rating, Full Range

ASTM E1477-98a(2008) 使用集成球形反射计测定音响材料反光因素的标准试验方法

Acoustical materials are often used as the entire ceiling of rooms and are therefore an important component of the lighting system. The luminous reflectance of all important components must be known in order to predict the level of illumination that will be obtained. The reflecting properties of a surface are measured relative to those of a standard reflector, the perfect reflecting diffuser, to provide a reflectance factor. The luminous reflectance factor is calculated for a standard illuminant, and a standard observer, for the standard hemispherical (integrating-sphere) geometry of illumination and viewing, in which all reflected radiation from an area of the surface is collected. In this way the reflecting properties of an acoustical material can be represented by a single number measured and calculated under standard conditions. Acoustical materials generally have a non-glossy white or near-white finish. The types of surface cover a wide range from smooth to deeply fissured. Measurement with integrating-sphere reflectometers has been satisfactory although multiple measurements may be required to sample the surface adequately. Instruments with other types of optical measuring systems may be used if it can be demonstrated that they provide equivalent results. The use of this test method for determining the luminous reflectance factor is required by Classification E 1264.1.1 This test method covers the measurement of the luminous reflectance factor of acoustical materials for use in predicting the levels of room illumination. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Luminous Reflectance Factor of Acoustical Materials by Use of Integrating-Sphere Reflectometers

DLA MIL-L-12632 D (1)-1998 永磁扬声器(防霉,防吹和耐浸没 2瓦封闭式)的一般规范

The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed.

LOUDSPEAKERS, PERMANENT MAGNET (ENCASED, 2 WATT, FUNGUS-, GUNBLAST-, AND IMMERSION RESISTANT), GENERAL SPECIFICATION FOR

ASTM E1477-98a(2003) 使用集成球形反射计测定音响材料反光因素的标准试验方法

Acoustical materials are often used as the entire ceiling of rooms and are therefore an important component of the lighting system. The luminous reflectance of all important components must be known in order to predict the level of illumination that will be obtained. The reflecting properties of a surface are measured relative to those of a standard reflector, the perfect reflecting diffuser, to provide a reflectance factor. The luminous reflectance factor is calculated for a standard illuminant, and a standard observer, for the standard hemispherical (integrating-sphere) geometry of illumination and viewing, in which all reflected radiation from an area of the surface is collected. In this way the reflecting properties of an acoustical material can be represented by a single number measured and calculated under standard conditions. Acoustical materials generally have a non-glossy white or near-white finish. The types of surface cover a wide range from smooth to deeply fissured. Measurement with integrating-sphere reflectometers has been satisfactory although multiple measurements may be required to sample the surface adequately. Instruments with other types of optical measuring systems may be used if it can be demonstrated that they provide equivalent results. The use of this test method for determining the luminous reflectance factor is required by Classification E 1264.1.1 This test method covers the measurement of the luminous reflectance factor of acoustical materials for use in predicting the levels of room illumination.1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Luminous Reflectance Factor of Acoustical Materials by Use of Integrating-Sphere Reflectometers

IEC 61305-2:1997 家用高保真音响设备和系统 测量和规范性能的方法 第2部分:FM无线电调谐器

This part of IEC 61305 applies to household high-fidelity radio tuner units with facilities for reception of frequency modulation sound broadcasts with a rated maximum system deviation of ±75 kHz, using the pilot-tone system for stereophonic broadcasting (see ITU-R BS.450-2). It may be applied to systems using a rated maximum system deviation of ±50 kHz by decreasing all the stated deviations in proportion. It also applies, except where stated, to equipment having multiple functions, including these facilities. It is intended to be read in conjunction with part 1 of this standard.

Household high-fidelity audio equipment and systems - Methods of measuring and specifying the performance - Part 2: FM radio tuners

ARMY MIL-PRF-62488 A-1997 音频扬声器

This specification covers an audiofrequency amplifier(hereafter referred to as a distribution unit) used on military ground vehicles.

AMPLIFIER, AUDIO FREQUENCY

NF C97-210:1997 声频和视听设备.数字音响零件.声频特性的基本测量方法(欧洲标准EN 61 606)

Audio and audiovisual equipment. Digital audio parts. Basic methods of measurement of audio characteristics.

DIN EN 61938:1997 音频系统,视频系统和声图信号系统.互联和匹配值.模拟信号推荐匹配值

The document deals with prefered electrical values for the interconnection of analogue signals amongst audio, video and AV system equipment.#,,#

Audio, video and audiovisual systems - Interconnections and matching values - Preferred matching values of analogue signals (IEC 61938:1996); German version EN 61938:1997

BS 6955-22:1997 振动和冲击传感器的校准 加速度计共振测试 一般方法

ISO 5347 comprises a series of documents dealing with methods for the calibration of vibration and shock pick-ups. This part of ISO 5347 lays down detailed specifications for the instrumentation and procedures to be used for accelerometer resonance testing. It applies to rectilinear accelerometers of the piezoresistive, piezoelectric and variable capacitance types in the frequency range 50 Hz to 200 kHz. The procedures are in general contrary to those described in ISO 5347-14 which is limited to undamped accelerometers. The frequency response of a piezoelectric accelerometer depends on the value of the (lowest) resonance frequency of the instrument when mounted on the structure to be tested. It does not appear possible to specify a test which will determine this frequency for all installations of a given accelerometer. This procedure gives the accelerometer resonance frequency under a set of standard reproducible conditions, with the understanding that the resonance frequency in actual use will in all probability be appreciably different (generally lower, by a factor depending on the mass and compliance of the test structure and the method of attachment). The procedure is not suitable for evaluating the mounted resonance frequency for a field of application; a suitable method is given in ISO 5348.

Calibration of vibration and shock pick-ups. Accelerometer resonance testing. General methods

NF C97-230:1997 音频,视频和音频可视系统.互联和匹配值.模拟信号的优先匹配值

Audio, video and audiovisual systems. Interconnections and matching values. Preferred matching values of analogue signals.

IEC TR3 61119-4:1997 数字音频盒式磁带系统(DAT) 第4部分:字符组合格式

This publication applies to the Pack information of the Subcode in the Sub data part of the DAT system. This publication describes how to use the newly defined Pack itern=1001 (Character) and describes the expansion procedure of Pack item=0100 (TOC) out of many Packs which are defined for audio use (ID=0000) of the Sub ID. The purpose of this publication is to establish the writing and recording procedures, and to preserve the interchangeability of character information (called Characters hereafter) when used in the Subcode of DAT systems. The standard also includes the operation rules.

Digital audio tape (DAT) cassette system - Part 4: Character pack format

ANSI S4.55-1997 专业音响的推荐操作规程.声音信号极性的守恒

Standardizes the polarity of the signals at the various interface points between different items of equipment, in particular from the acoustical, electrical, and magnetic aspects. Each item of equipment complies separately with the polarity requirements for input and output signals.

Recommended Practice for Professional Audio - Conservation of the Polarity of Audio Signals

ANSI S4.56-1997 专业音频设备的推荐操作规程.扬声器的主观评价

This Standard is a set of recommendations for subjective evaluation of high-performance loudspeaker systems. It is believed that, for certain audio components including loudspeakers, subjective evaluation is a necessary adjunct to objective measurements. The strong influence of listening conditions, program material and of individual evaluators is recognized. This document seeks, therefore, to assist in avoiding testing errors rather than to attempt to establish a correct procedure

Recommended Practice for Professional Audio - Subjective Evaluation of Loudspeakers