Acoustic Testing
Federal, NVLAP NIST-Accredited Acoustic Lab (Lab Code 200248) at Orfield include three reverberation rooms and a full anechoic chamber which are used for certified, standardized ASTM, ISO, ANSI and SAE consumer, industrial, product and architectural materials testing, measuring sound power, sound transmission, vibration transmission, and sound absorption. Complimenting Orfield's outstanding facility and staff is one of the most comprehensive collections of high quality acoustical test instruments in private consulting in the USA. Consisting primarily of Brüel & Kjær instruments, the collection includes precision analyzers, measurement microphones, accelerometers, software and accessories to offer testing for virtually limitless laboratory, field and research capabilities.
The Orfield Anechoic Chamber has recieved international recognition following its’ recognition by Guinness as “The Quietest Place on Earth" (Guinness 2004, 2012, 2021).
Standardized Acoustic Testing Offered:
ASTM E90: Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions | Frequency Range: 80 to 5000 Hz
ASTM E492: Laboratory Measurement of Impact Sound Transmission through Floor-Ceiling Assemblies using the Tapping Machine
ISO 3744: Determination of Sound Power Levels of Noise Sources— Engineering Methods for Free Field Conditions Over a Reflecting Plane
ISO 3745: Determination of Sound Power Levels of Noise Sources— Precision Methods for Anechoic and Semi-Anechoic Rooms
ASTM E336: Measurements of Airborne Sound Insulation in Buildings
ASTM E1007: Field Measurement of Tapping Machine Impact Sound Transmission through Floor-Ceiling Assemblies and Associated Support Structures
ASTM E966: Guide for Field Measurement of Airborne Sound Insulation in Building Facades and Façade Elements
ISO 3741: Determination of Sound Power Levels of Noise Sources in Reverberation Rooms
ANSI S12.51: Determination of Sound Power Levels of Noise Sources Using Sound Pressure— Precision Method for Reverberation Rooms
ANSI S12.54: Determination of Sound Power Levels and Sound Energy Levels of Noise Sources Using Sound Pressure— Engineering Methods for an Essentially Free Field over a Reflecting Plane
ANSI S12.55: Precision Methods for Determination of Sound Power Levels of Noise Sources in Anechoic and Hemi-Anechoic Rooms
ASTM C423 Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method.
ASTM E1050 Sound Absorption and Sound Absorption Coefficients by the Impedance Tube Method
Acoustic Test Systems/Instrumentation:
Real Time Analyzer - Norsonic NOR 850 10-channel Analyzer
Real Time Analyzers – Many, Bruel & Kjaer, CEL, others
Sound Pressure Level Meters, Bruel & Kjaer, CEL, others
Acoustic Camera Norsonic
Sound Intensity System, Bruel and Kjaer
Sound Power Source - Bruel and Kjaer, others
Lab Analysis System Norsonic
Loudspeakers – Many
Head and Torso Simulator (HATS) – 3 Bruel & Kjaer
Sound Quality Audio Interface Bruel and Kjaer
Set of Jury Sennheiser Headsets -25
Microphones – Hundreds – Bruel & Kjaer, Norsonic, Gras, others
Accelerometers – Many – Bruel and Kjaer, CEL
Rotating Microphone Boom – 3 , Bruel and Kjaer
Tapping Machine – Norsonic Bruel and Kjaer
Orfield Custom Indoor Climate Survey Instrument, LSI
Software – Bruel & Kjaer, Norsonic, Sound Plan, Ease, Easera