M72 音响、电声设备 标准查询与下载



共找到 720 条与 音响、电声设备 相关的标准,共 48

本标准适用于YC型音响设备用圆形连接器质量分等。

YC-type circular connectors for audio equipment--Quality grading standard

ICS
33.160.01
CCS
M72
发布
1993-09-03
实施
1994-01-01

本标准适用于YS1型音响设备用圆形连接器质量分等。

YS1-type circular connectors for audio equipment--Quality grading standard

ICS
33.160.01
CCS
M72
发布
1993-09-03
实施
1994-01-01

本标准适用于YL型音响设备用圆形连接器质量分等。

YL-type circular connectors for audio equipment--Quality grading standard

ICS
33.160.01
CCS
M72
发布
1993-09-03
实施
1994-01-01

Provides recommended design and measurement methods for use by local authorities and administrators of public buildings and sports stadia, purchasers, designers, manufacturers and installers, for the correct installation of AFILS with an acceptable performance level and good reliability for use by persons who are hard of hearing.

Code of practice for audio-frequency induction-loop systems (AFILS)

ICS
17.140.50
CCS
M72
发布
1993-08-15
实施
1993-08-15

本标准规定了汽车收、放音机的技术要求、试验方法、检验规则、标志、包装、运输、贮存。 本标准适用于汽车收、放音机。它是制造厂制定产品标准的依据。

General specification for car radio cassette player

ICS
33.160.01
CCS
M72
发布
1993-07-21
实施
1993-12-01

本标准适用于各种车用的高保真系统。该系统包括车用的高保真调频广播调谐器、磁带录音和重放设备、CD唱机、声频放大器、声频组合设备、传声器、扬声器和头戴耳机。

Minimun perfermance requirements of high fidelity system for use in vehicles

ICS
33.160.01
CCS
M72
发布
1993-07-21
实施
1993-12-01

本标准是考核电视广播接收机(黑白、彩色)、收音机、录音机、收录音机用电动式扬声器(不包括中、高频扬声器)产品质量的依据。

Loudspeakers--Quality grading standard

ICS
33.160.99
CCS
M72
发布
1993-07-13
实施
1993-11-01

本标准规定了YD100双磁路复合盆直接辐射式电动锥形扬声器的技术要求、试验方法、检验规则及标志、包装、运输、贮存。 本标准适用于彩色电视广播接收机用YD100(含YD103)双磁路复合盆直辐射式电动锥形扬声器。

YD100 Dynamic composite-cone loudspeakers of direct radiat type with two-magnet systems

ICS
33.160.99
CCS
M72
发布
1993-06-17
实施
1993-10-01

本标准规定了YDG50(含YDG52)电动式高频纸盆扬声器的技术要求、试验方法、检验规则及标志、包装、运输、贮存。 本标准适用于收录机及家用扬声器系统用YDG50电动式高频纸盆扬声器。

YDG50 Dynamic paper-cone tweeteers

ICS
33.160.99
CCS
M72
发布
1993-06-17
实施
1993-10-01

Audio, video and audiovisual systems. Domestic digital bus (D2B).

ICS
33.160.01;97.120
CCS
M72
发布
1993-06-01
实施
1993-06-05

Lists and defines characteristics affecting performance of CD players to establish their conditions and methods of measurement and to standardize result presentation.

Methods of measuring the characteristics of reproducing equipment for digital audio compact discs

ICS
33.160.30
CCS
M72
发布
1993-04-15
实施
1993-04-15

The CCITT considers it important that there should be a standardized method of objectively measuring speech level, so that measurements made by different Administrations may be directly comparable. Requirements of such a meter are that it should measure active speech level and should be independent of operator interpretation.

OBJECTIVE MEASUREMENT OF ACTIVE SPEECH LEVEL

ICS
CCS
M72
发布
1993-03-01
实施

The signal described here reproduces the on-off temporal characteristics of human conversational speech for characterizing speech processing systems which have speech detectors, such as loudspeaker telephones, echo control devices, digital circuit multiplication equipment (DCME), packet systems, and asynchronous transfer mode (ATM) systems. This signal reflects parameters of human conversation such as the length of the talk-spurt, pause, double talk, and mutual silence. The following chapters describe these Characteristics and a method of generating artificial conversational speech.

ARTIFICIAL CONVERSATIONAL SPEECH

ICS
CCS
M72
发布
1993-03-01
实施

The WITT considers that, in order to ensure continuity with previous practice, it is not desirable to modify the specification of the volume meter of the ARAEN. Table 1 gives the principal characteristics of various measuring devices used for monitoring the volume or peak values during telephone conversations or sound-programme transmissions

VOLUME METERS

ICS
CCS
M72
发布
1993-03-01
实施

The WITT considers that, in order to ensure continuity with previous practice, it is not desirable to modify the specification of the volume meter of the ARAEN. Table 1 gives the principal characteristics of various measuring devices used for monitoring the volume or peak values during telephone conversations or sound-programme transmissions

VOLUME METERS

ICS
CCS
M72
发布
1993-03-01
实施

The signal described here reproduces the on-off temporal characteristics of human conversational speech for characterizing speech processing systems which have speech detectors, such as loudspeaker telephones, echo control devices, digital circuit multiplication equipment (DCME), packet systems, and asynchronous transfer mode (ATM) systems. This signal reflects parameters of human conversation such as the length of the talk-spurt, pause, double talk, and mutual silence. The following chapters describe these Characteristics and a method of generating artificial conversational speech.

ARTIFICIAL CONVERSATIONAL SPEECH

ICS
CCS
M72
发布
1993-03-01
实施

The CCITT considers it important that there should be a standardized method of objectively measuring speech level, so that measurements made by different Administrations may be directly comparable. Requirements of such a meter are that it should measure active speech level and should be independent of operator interpretation.

OBJECTIVE MEASUREMENT OF ACTIVE SPEECH LEVEL

ICS
CCS
M72
发布
1993-03-01
实施

As a consequence of a reform process within the International Telecommunication Union (ITU), the CCITT ceased to exist as of 28 February 1993. In its place, the ITU Telecommunication Standardization Sector (ITU-T) was created as of 1 March 1993. Similarly

(WITHDRAWN) Control of Echo Suppressors - Control of Echo Suppressors and Echo Cancellers - General Recommendations on Telephone Switching and Signalling - Clauses Applicable to ITU-T Standard Systems (Study Group XI) 15 pp

ICS
CCS
M72
发布
1993-03
实施

Digital audio interface; amendment 1

ICS
33.160.30
CCS
M72
发布
1993-02
实施

This Recommendation should be associated with Recommendation G.722 7 kHz audio coding within 64 kbit/s and Recommendation H.221 Frame structure for a 64 kbit/s channel in audiovisual teleservices.

SYSTEM ASPECTS FOR THE USE OF THE 7 kHz AUDIO CODEC WITHIN 64 kbit/s

ICS
CCS
M72
发布
1993-01-01
实施



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