SIST EN ISO 717-1:2021 PDF

Overview

EN ISO 717-1:2020 - "Acoustics - Rating of sound insulation in buildings and of building elements - Part 1: Airborne sound insulation" (ISO 717-1:2020) standardizes how frequency-dependent airborne sound insulation results are converted into single-number ratings. It defines the single-number quantity (the value of the reference curve at 500 Hz after shifting) and associated spectrum adaptation terms to reflect different noise spectra (e.g., internal building sources vs. external traffic). The standard supports both laboratory and field measurement results and is intended to simplify acoustical specifications in building codes and product requirements.

Key topics and requirements

• Single-number quantities: Defines the method to obtain a single-number airborne sound insulation rating from octave or one-third-octave band data.
• Reference and calculation method: The single-number rating is derived by shifting a reference curve; the reference value at 500 Hz is used as the rating.
• Spectrum adaptation terms (C and Ctr): Two spectrum adaptation terms are specified to account for typical sound spectra (internal and external/traffic). These are added to the single-number rating when relevant.
• Measurement bases and frequency ranges:
  • One-third-octave bands: 100 Hz to 3 150 Hz (required for laboratory measurements per ISO 10140-2).
  • Octave bands: 125 Hz to 2 000 Hz (allowed for some applications).
  • Annex B addresses rating using an enlarged frequency range.
• Uncertainty expression: An optional more precise single-number evaluation in steps of 0.1 dB is provided for expressing uncertainty (except for spectrum adaptation terms).
• Applicable test standards: Rules provided assume band data from standards such as ISO 10140-2 (laboratory) and ISO 16283-1 (field).

Applications and users

EN ISO 717-1:2020 is used to:

• Rate walls, floors, doors, windows and other building elements for airborne sound insulation.
• Formulate and verify acoustic requirements in building regulations and procurement specifications.
• Produce comparable product declarations and performance claims for manufacturers of partitions, glazing, doors, and acoustic linings.
• Support acoustic consultants, test laboratories, building designers, architects, and regulators in specifying and verifying sound insulation performance.

Typical users

• Acoustic engineers and consultants
• Building product manufacturers and R&D teams
• Test laboratories (reference to ISO 10140-2)
• Building authorities and code writers

Related standards

• ISO 10140 series (laboratory measurement of sound insulation), especially ISO 10140-2:2010
• ISO 16283-1:2014 (field measurement of airborne sound insulation)
• ISO 10140-5, ISO 10848-2, ISO 15186-1 (referenced for measurement context)

Keywords: EN ISO 717-1:2020, airborne sound insulation, single-number rating, spectrum adaptation terms, ISO 10140-2, ISO 16283-1, building acoustics, sound insulation rating.