M72 音响、电声设备 标准查询与下载

ITU-R RAPPORT BS.300-7 FRENCH-1990 调频声广播中的立体声或多维声音

Stereophonic or multi-dimensional sound in frequency-modulation sound broadcasting

IEC 60268-11:1987/AMD1:1989 声系统设备 第11部分:声系统部件互连连接器的应用 修改1

Refers to page 29 of IEC 268-11 and replaces table III B.

Sound system equipment; part 11: application of connectors for the interconnection of sound system components; amendment 1 to IEC 60268-11:1987

GY/T 66-1989 有线广播用晶体管扩音机测量方法

Measurement method for transistor sound amplifiers used for cable casting

GY/T 67-1989 有线广播用晶体管扩音机技术要求

Technical requirements for transistor sound amplifiers used for cable casting

BS 5942-12:1989 高保真度音响设备及系统最低性能要求.第12部分:电视调谐器音频输出规范

Applies to mono, stereo or dual high fidelity sound reproduction systems for domestic use.

High fidelity audio equipment and systems; minimum performance requirements - Specification for the sound output of television tuners

BS 7154:1989 会议系统规范.电气及音频要求

Describes different types of system using both wired and wireless transmission and specifies basic electrical requirements plus the minimum requirements for auxiliary equipment used with the systems.

Specification for conference systems: electrical and audio requirements

IEC 60268-5:1989 声系统设备 第5部分:扬声器

Sound system equipment; part 5: loudspeakers

IEC 60268-15/AMD1:1989 第1次修改

Sound system equipment; part 15: preferred matching values for the interconnection of sound system components; amendment No. 1 to publication 268-15:1987

GY/T 76-1989 广播调音台电性能运行技术指标.测量方法

Technical indices of electrical performance and operation of broadcast mixer Measurement method

IEC 60574-17:1989 视听、视频和电视设备与系统 第17部分:音频学习系统

Applies to audio-learning systems with cassette recorders, usually applied for language training. Gives a survey of the functions which may be provided in audio-learning systems of various types. Defines methods of measurement and requirements for charac

Audiovisual, video and television equipment and systems; part 17: audio-learning systems

ITU-T Q.112-1989 信号电平和信号接收器灵敏度

CCI?T Recommendation characteristics of primary PCM multiplex equipment operating at 2048 kbit/s, Vol. III, Fascicle 111.3, Rec. (3.732. CCITT Recommendation Characteristics of primary PCM multiplex equipment operating ut 1544 kbit/s, Vol. III, Fascicle I

Signal Levels and Signal Receiver Sensitivity - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 2 pp

ITU-T Q.33-1989 防止传输故障对电路群的影响

Although certain signalling systems may have the capability to provide an indication when an individual circuit is faulty, in order to maintain the required availability of the public network, it is considered necessary to provide alarm facilities to aler

Protection Against the Effects of Faulty Transmission on Groups of Circuits - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 17 pp

IEC 60849:1989 备用音响系统

Sound systems for emergency purposes

JJG(电子) 02007-1989 2627型前置放大器检定规程

Specification for verification of 2627 model preamplifiers

BS 6840-8:1988 音响系统设备 自动增益控制装置特性的规定和测量方法

Devices for limiting and/or compressing properties are included, but expanders, clipping devices, and gain control using an external source are not included. To be read in conjunction with BS 5428:Part 2:1979, BS 6840-1:1987

Sound system equipment. Methods for specifying and measuring the characteristics of automatic gain control devices

DLA MIL-A-85881-1988 A7型前起落架装置扬声器

This specification establishes the design, performance, and acceptance requirements for the A7 Nose Gear Steering Amplifier herein referred to as the amplifier.

AMPLIFIER, A7 NOSE GEAR STEERING

ITU-T H.100-1988 可视电话系统

The visual telephone service is generally a two-way telecommunication service which uses a switched network of broadband analogue and/or digital circuits to establish connections among subscriber terminals,primarily for the purpose of transmitting live or static pictures.Special application one-way systems,e.g.surveillance and some information retrieval systems,or a nonswitched videoconference service,can be regarded as degenerate cases of the visual telephone service.

VISUAL TELEPHONE SYSTEMS

ITU-T J.12-1988 在IP网络上声音和电视节目的发送

Note–For the purposes of this Recommendation and other Recommendations in the Series J,soundprogramme circuits have been classified in terms of the nominal effectively transmitted bandwith.For convenience,the corresponding type of circuit from the administrative point of view (see Recommendation D.180 [1]) is given under each type of equipment in the following paragraphs.

TYPES OF SOUND-PROGRAMME CIRCUITS ESTABLISHED OVER THE INTERNATIONAL TELEPHONE NETWORK

ITU-T J.11-1988 向世界范围内一般家庭系统提供交互电视业务的基本原则

ITU-T Recommendation J.11 was published in Fascicle III.6 of the Blue Book. This file is an extract from the Blue Book.While the presentation and layout of the text might be slightly different from the Blue Book version,the contents of the file are identical to the Blue Book version and copyright conditions remain unchanged (see below).

HYPOTHETICAL REFERENCE CIRCUITS FOR SOUND-PROGRAMME TRANSMISSIONS

IEC 60268-3:1988 音响系统设备.第3部分:放大器

Sound system equipment; part 3: amplifiers