TR15 Acoustic Calculator

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