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BS CEN/TS 1793-5:2003

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Road traffic noise reducing devices. Test method for determining the acoustic performance Intrinsic characteristics. In situ values of sound reflection and airborne sound insulation
Available format(s)

Hardcopy , PDF

Superseded date

04-30-2016

Language(s)

English

Published date

04-25-2003

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Reflection index measurements
  4.1 General principle
  4.2 Measured quantity
  4.3 Measuring equipment
      4.3.1 Components of the measuring system
      4.3.2 Sound source
      4.3.3 Test signal
  4.4 Data processing
      4.4.1 Calibration
      4.4.2 Sample rate
      4.4.3 Background noise
      4.4.4 Signal subtraction technique
      4.4.5 Adrienne temporal window
      4.4.6 Placement of the Adrienne temporal window
      4.4.7 Low frequency limit and sample size
  4.5 Positioning of the measuring equipment
      4.5.1 Maximum sampled area
      4.5.2 Selection of the measurement positions
            4.5.2.1 Flat homogeneous samples
            4.5.2.2 Non flat or non homogeneous samples in
                    one direction
            4.5.2.3 Non flat or non homogeneous samples in
                    two directions
      4.5.3 Reflecting objects
      4.5.4 Safety considerations
  4.6 Sample surface and meteorological conditions
      4.6.1 Condition of the sample surface
      4.6.2 Wind
      4.6.3 Air temperature
  4.7 Single-number rating of sound reflection DL[RI]
  4.8 Measuring procedure
  4.9 Test report
5 Sound insulation index measurements
  5.1 General principle
  5.2 Measured quantity
  5.3 Measuring equipment
      5.3.1 Components of the measuring system
      5.3.2 Sound source
      5.3.3 Test signal
  5.4 Data processing
      5.4.1 Calibration
      5.4.2 Sample rate
      5.4.3 Background noise
      5.4.4 Scanning technique
      5.4.5 Adrienne temporal window
      5.4.6 Placement of the temporal window
      5.4.7 Low frequency limit and sample size
  5.5 Positioning of the measuring equipment
      5.5.1 Selection of the measurement positions
      5.5.2 Post measurements
      5.5.3 Additional measurements
      5.5.4 Reflecting objects
      5.5.5 Safety considerations
  5.6 Sample surface and meteorological conditions
      5.6.1 Condition of the sample surface
      5.6.2 Wind
      5.6.3 Air temperature
  5.7 Single-number rating of airborne sound insulation
      DL[SI]
      5.7.1 Elements
      5.7.2 Posts
  5.8 Measuring procedure
  5.9 Test report
Annex A (informative) Definition and usage of the MLS signal
      A.1 The MLS test signal
      A.2 Recovering of the overall impulse response
      A.3 Sample rate and MLS time length
      A.4 Improvement of the signal-to-noise ratio
Bibliography

Defines a test method for measuring two quantities representative of the intrinsic characteristics of traffic noise reducing devices : the reflection index for sound reflection and the sound insulation index for airborne sound insulation.

Committee
B/509/6
DocumentType
Standard
Pages
46
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

Standards Relationship
CEN/TS 1793-5 : 2003 Identical

ISO 13472-1:2002 Acoustics Measurement of sound absorption properties of road surfaces in situ Part 1: Extended surface method
EN 1793-3:1997 Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 3: Normalized traffic noise spectrum
EN 1793-1:2017 Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption under diffuse sound field conditions
EN 60651:1994/A2:2001 SOUND LEVEL METERS (IEC 60651:1979/A2:2000)
EN 1793-2:2012 Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions

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