# TR15 Acoustic Calculator

> Sound transmission calculator

Canonical page: [https://chrome-stats.com/d/id1507190662](https://chrome-stats.com/d/id1507190662)

## Overview

- **ID:** `id1507190662`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** American Wood Council
- **Category:** Business
- **Version:** 1.0.6
- **Last updated:** 2020-07-01
- **First published:** 2020-04-10
- **Size:** 157 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/tr15-acoustic-calculator/id1507190662)
- **Website:** [http://awc.org](http://awc.org/)
- **Privacy policy:** [http://awc.org/privacy](http://awc.org/privacy)

## Description

Based upon the data and methodologies compiled in American Wood Council's Technical Report No. 15 (TR15), this calculator simplifies the calculation of sound transmission through wood-frame floor and ceilings.  Sound transmission class (STC) and Impact insulation class results are given as well as the following detail data at ⅓ octave band center frequency ranging from 125 Hz to 4000 Hz:

TL / STC:
- Floor Layer Estimated Transmission Loss
- Ceiling Layer Estimated Transmission Loss
- System Effect
- Estimated Transmission Loss
- ASTM E413 Reference Contour
- STC shifted Reference Contour
- Estimated Transmission Loss Deficiencies

ISPL / IIC:
- STC Transmission Loss 
- ISPL Adjustment
- Estimated Impact Sound Pressure Level
- ASTM E989 Reference Contour
- Shifted Reference Contour
- Impact Insulation Deficiencies

## Rankings

- #1,348,050 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1507190662)