Skip to contentScholarGate
LibraryBookshelfDeskReview StudioAssistant
Sign in
Sound Transmission Class/Evidence
Method evidence record

Sound Transmission Class

Sound Transmission Class (STC) is a single-number rating used to describe how well building elements (walls, doors, windows) reduce sound transmission between adjacent spaces. Standardized by ASTM International and ISO, STC is calculated from sound transmission loss (STL) measurements across the speech frequency range (125 Hz–4 kHz). It is the primary metric used in building codes, product specifications, and acoustic design to ensure privacy, noise control, and occupant comfort.

Sources recorded, not reviewed

Source record

Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.

Sound Transmission Class (STC) Rating and Measurement
Taxonomic method record · process-pipeline / acoustics
  • ASTM E413-16 (2016). Classification for Rating Sound Insulation. American Society for Testing and Materials. · URL
  • ISO 717-1 (1996). Rating of Sound Insulation for Buildings and Building Elements. International Organization for Standardization. · URL
  • ASTM E2179-16 (2016). Standard Test Method for Measuring Sound Transmission Loss of Building Partitions by the Reverberation Method. American Society for Testing and Materials. · URL
Open full method

Curated claims

Claims persisted in the evidence ledger, each with its own assessment.

No curated claims yet

This view does not invent a claim assessment when the ledger has none.

Related methods

Generated from the method graph and shown as machine-suggested relations — no evidence claim is inferred.

Same method familyAcoustic Ray Tracingmachine-suggested · Relational suggestion, not evidence.Same method familyBEM Acousticsmachine-suggested · Relational suggestion, not evidence.Same method familyImpedance Tubemachine-suggested · Relational suggestion, not evidence.Same method familyPsychoacoustic Maskingmachine-suggested · Relational suggestion, not evidence.Same method familyRoom Impulse Responsemachine-suggested · Relational suggestion, not evidence.

Evidence status

Sources recorded, not reviewed

Bibliographic sources are present. Claim-level evidence review has not been performed.

Sources

3 recorded citations, copied from the method source record.

Actions

Open method page
ScholarGate

A content-first reference library for research methods — what each one is, how it works, and where it comes from.

Open data (CC-BY)

Explore

  • Library
  • Search the library…
  • Browse by field
  • Fields
  • Journey
  • Compare
  • Which method?

Reference

  • Subjects
  • Atlas
  • Glossary
  • Methodology
  • Philosophy

Your tools

  • Bookshelf
  • Desk
  • Chat

Company

  • About
  • Pricing
  • Contact
  • Suggest a method

Entries are compiled from published sources for reference. Verifying the accuracy and suitability of any information for your own use remains your responsibility.

© 2026 ScholarGate · A research-method reference library
  • Privacy
  • Cookies
  • Terms
  • Delete account