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Sound Transmission Massive Walls

Reference data and engineering information about sound transmission massive walls for acoustics applications.

soundtransmissionmassivewalls

Overview

Engineering reference data for Sound Transmission Massive Walls in acoustics.

Key Formulas

Speed of Sound

c=γRTc = \sqrt{\gamma R T}

Speed of sound in an ideal gas.

Sound Level

L=10log10(I/I0)L = 10 \log_{10}(I/I_0)

Decibel level.

Wavelength

λ=c/f\lambda = c / f

Wavelength = speed / frequency.

Variables

SymbolDescriptionUnit
ccSpeed of soundm/s
LLSound leveldB
λ\lambdaWavelengthm
ffFrequencyHz

Frequency Correction for Sound Attenuation

8 rows
Frequency correction values to add to the mean attenuation for calculating sound transmission loss at specific frequencies.
Frequency(Hz)
Attenuation Correction(dB)
63-13
125-9
250-5
500-1
10003
20007
400011
800015

Source: engineeringtoolbox.com

Sound Transmission Loss for Typical Building Elements

Interactive Charts

Sound attenuation - massive walls floors

References