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Building Acoustics
Building Acoustics (Sound Level Meter)
Building Acoustics Measurements are used to determine if the sound insulation between rooms and facades are good enough for noise control purpose; or if acoustics environment is suitable for the purpose of lecture room, theatre, recording studio....etc.
DNA Software (for Building Acoustics)
DNA software for Building Acoustics (Sound Level Meter)
Larson Davis DNA sofware is a flexible and powerful PC software, that can be used for Building Acoustics Measurement together with 831 Sound Level Meter :
  • Reveberation time RT-60 with backward Schroeder Integration
  • Sound Insulation according to ISO R140 & ISO 717
  • Sound Insulation according to ASTM E90-E336 & ASTM E007
More about DNA software....
831 Sound Level Meter (for Building Acoustics)
831-RT Building Acoustics (Sound Level Meter)
Larson Davis 831 is an Advanced Sound Level Meter / Analyzer, which can be used for Octave Spectrum and Reverberation Time measurment for Building Acoustics. It can carry out measurement by itself; or act as the front end of a PC-based Real-time Analyzer (running DNA PC software).

Highlights of 831 Sound Level Meter
  • 120 dB dynamic range and 17 dBA noise level (no gain adjustment is needed)
  • 1/3 octave analysis from 6.3 to 20k Hz (831-OB3 option)
  • RT-20, RT-30 measurement according to ISO 3382-2:2008 and ASTM E2235-04 (831-RT option)
  • Front end of PC-based Real-time Analyzer (together with DNA software)
  • Sound recording in WAV format (831-SR option)
  • data can be stored in internal memory (up to 1.2Gb) or external USB stick (unlimited storage capacity)
  • > 16 running hours hours
Omni-directional Sound Source
download pdf of Larson Davis BAS001 Omni-directional Sound Source (for Sound Level Meter)
The BAS001 Source is designed to generate omni-directional sound fields for making standard compliant measurements including: architectural acoustics (ISO
3382), building acoustics (insertion loss, acoustic absorption area, etc: ISO 140-4,
DIN 55210). The BAS001 is typically used to saturate a room with a uniform
acoustic field. The available high-efficiency power amplifier has no fan for cooling,
allowing measurements in quiet environments, like those in reverberation
time applications.

Frequency range : 80 - 12.5kHz
Sound Power : 118dB ref 1pW (not equalized)
Directional Sound Source
download pdf of Larson Davis BAS003 directional sound source (Sound Level Meter)
The BAS003 Source is designed to generate homogeneous sound fields using
random noise in compliance with the following standards: architectural
acoustics (ISO 3382, ASTM E2235), building acoustics (insertion loss, acoustic
absorption area, etc: ISO 140-4/5, DIN 55210). The BAS003 is typically used
to saturate a room with a uniform acoustic field. The available high-efficiency
power amplifier has no fan for cooling, allowing measurements in quiet
environments, like those in reverberation time applications.

Frequency range : 80 - 12.5kHz
Sound Power : 124dB ref 1pW (not equalized)
  Download pdf 
> DNA software
> 831 Sound Level Meter for RT60 reverberation time
pdf BAS001 Omni-directional Sound Source
pdf BAS003 Directional (Facade) Sound Source
pdf BAS002 power amplifier