- Active Noise Control FAQ
Active noise control is sound field modification, particularly sound field cancellation, by electro-acoustical means. This list of "frequently asked questions" describes how active noise control works, and gives examples of what it can and cannot do.
Achieving Speech Privacy and Masking Voices, Noise, and Distractions in offices and Healthcare.
Office Noise and Distractions can affect Confidentiality, Speech Privacy, Employee Productivity, Data Entry Errors, and Employee Strees. Our Sound Masking Systems eliminate voices and noise from traveling across large open rooms with cubicles, or from private room to room. We also offer Paging systems and Emergency all-call evacuation paging.
Active Noise and Vibration Control Group, The University of Adelaide
The Active Noise & Vibration Control Group was established in 1987 with a grant from the Sir Ross and Sir Keith Smith fund for fundamental studies leading to a system to actively control aircraft cabin noise. The aim of the group is to undertake fundamental and applied research in active noise and vibration control and to apply the results of research to the development of commercial controllers and to the installation of practical systems in industry.
NGC Testing Services
Over 35 years of providing fast, cost effective evaluations of materials, products and systems for fire endurance & flame spread from the developmental stage though the certification process. Accredited lab with full scale floor-ceiling & partition fire test capabilities. Acoustical testing also available.
Particle Velocity Acoustical Sensors
Overview of the microflown technology to measure the entire range of acoustical properties like particle velocity, sound power and ( three dimensional ) sound intensity
Ocean Acoustics Library
Resource for acoustic modeling software and data. Maintained by U.S. Office of Naval Research.
The Laboratory of Seismics and Acoustics
Delft University of Technology, The Netherlands
supplier, and pioneer, of non-contact vibration and stress measurement equipment. Typical applications include structural investigations, test cell or laboratory measurements, condition monitoring, and quality control.
In-Flight Rotorcraft Acoustics Program (IRAP)
NASA's aeronautics research will reduce noise to make helicopters and tiltrotors more acceptable to the public. The objective of IRAP is to acquire rotorcraft noise data in flight for comparison to wind tunnel data.