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AS 2680-1984

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Acoustics - Performance for tape recording equipment for use in acoustical measurement systems
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

06-30-2017

Language(s)

English

Published date

01-01-1984

Preview

1 - AS 2680-1984 ACOUSTICS - PERFORMANCE REQUIREMENTS FOR TAPE RECORDING EQUIPMENT FOR USE IN ACOUSTICAL MEASUREMENT SYSTEMS
4 - PREFACE
4 - CONTENTS
5 - SECTION 1. SCOPE AND GENERAL
5 - 1.1 SCOPE.
5 - 1.2 APPLICATION.
5 - 1.3 REFERENCED DOCUMENTS.
5 - 1.4 CLASSIFICATION.
6 - SECTION 2. MINIMUM PERFORMANCE REQUIREMENTS FOR TYPE A AND TYPE B TAPE RECORDING EQUIPMENT
6 - 2.1 GENERAL.
6 - 2.2 PERFORMANCE REQUIREMENTS.
6 - 2.2.1 Mean deviation from rated speed.
6 - 2.2.2 Speed fluctuation (wow and flutter).
6 - 2.2.3 Overall frequency response.
6 - 2.2.4 Overall record/ reproduce response drift.
6 - 2.2.5 Maximum output level.
6 - 2.2.6 Overall unweighted signal- to- noise ratio.
6 - 2.2.7 Separation between tracks.
6 - 2.2.8 Signal/ erased signal ratio.
7 - 2.3 OTHER CHARACTERISTICS AND REQUIREMENTS.
7 - 2.3.1 Maximum start time to record/ reproduce speed.
7 - 2.3.2 Interconnections.
7 - 2.3.3 Automatic gain control and noise reduction circuitry
7 - 2.3.4 Level indicator.
7 - 2.3.5 Environmental conditions.
7 - 2.3.6 Equalization characteristics.
7 - 2.3.7 Battery level indication.
8 - APPENDIX A - STATEMENT OF TEST RESULTS TO CHECK COMPLIANCE OF TAPE RECORDING EQUIPMENT WITH THIS STANDARD

Specifies the minimum performance requirements for tape recording equipment used in the analysis of acoustical signals. It deals only with those aspects of design and operation of tape recording equipment. It highlights the fact that the function of circuitry for automatic gain control and noise reduction, e.g. Dolby system, is not compatible with the requirements of acoustical measurements.

This standard specifies certain minimum performance requirements of tape recording equipment, excluding FM recorders, for recording and reproducing analogue representations of acoustical signals in acoustical measure- ment systems.NOTES:1. Tape recorders complying with this standard may not necessarily be suitable for acoustical measurements where frequency analysis in bands of less than one-third octave may be required.2. Appendix A gives the test information required in checking compliance of tape recording equipment with this standard.

Committee
AV-002
DocumentType
Standard
ISBN
0 7262 3269 6
Pages
4
PublisherName
Standards Australia
Status
Withdrawn
Supersedes

AS 1259-1982 Sound level meters
AS 1127.1-1989 Sound system equipment - General
AS 2659.1-1988 Guide to the use of sound measuring equipment - Portable sound level meters

AS/NZS 1269.1:2005 Occupational noise management Measurement and assessment of noise immission and exposure (Reconfirmed 2016)
AS/NZS 1269.1:1998 Occupational noise management - Measurement and assessment of noise immission and exposure
AS 1949-1988 Acoustics - Measurement of airborne noise emitted by vessels in waterways, ports and harbours
AS 1055.2-1997 Acoustics - Description and measurement of environmental noise Application to specific situations
AS 1948-1987 Acoustics - Measurement of airborne noise on board vessels and offshore platforms
AS 1055.1-1997 Acoustics - Description and measurement of environmental noise General procedures

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