AT&S and SevenBel Make Sound Field Noise Sources Visible

Austrian start-up SevenBel has developed a method to make noise sources visible, enabling engineers to prevent undesirable noise in buildings or devices. The company's Sound Scanner acoustic camera solutions have been developed for these applications, combining a rotating sensor unit, a mobile app, and a cloud service. High-tech printed circuit boards from Austria Technologie & Systemtechnik (AT&S) are part of the sensor units that make this affordable noise measurement solution possible.

Public address systems in public spaces have to clearly inform persons in danger about escape information and directions in case of an emergency. NTi Audio’s XL2 Acoustic Analyzer reliably measures the Speech Transmission Index (STI) and the results can be imported into the STI Reporting Tool which now also assigns the same ambient noise spectrum to multiple speech intelligibility measurement results.

PCB Piezotronics’s new Model 130A23 high-amplitude array microphone is designed to enable research engineers to locate noise sources in appliances, machinery, aircraft, and automotive interiors. This all-in-one prepolarized microphone and preamplifier measures acoustic signals in the audible range of the human ear with the extended dynamic and frequency range often found on more expensive condenser microphones.