STC and SRI Quiz
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Questions and Answers

What does a higher STC number indicate?

  • No impact on sound insulation
  • Less effective sound insulation
  • Inconsistent impact on sound insulation
  • More effective sound insulation (correct)

    • What does STC stand for?

  • Soundproofing Transmission Control
  • Sound Transmission Class (correct)
  • Soundproofing Thickness Coefficient
  • Soundproofing Technology Criteria

    • Which type of noise is the STC useful for evaluating annoyance?

  • Speech sounds (correct)
  • Music
  • Machinery noise
  • All of the above

    • What are the two most basic principles to improve the sound transmission class of a partition?

    <p>Adding mass and increasing overall thickness</p> Signup and view all the answers

    What does the ISO Sound Reduction Index (SRI) measure outside the US?

    <p>Airborne sound attenuation</p> Signup and view all the answers

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