The measurement of sound radiation from room surfaces in lightweight buildings

The Development of a Short Test Method for the Measurement of Airborne Sound Insulation in Buildings

“…The T.D.$. (time delay spectrometry) technique was originally developed by Richard C. Heyser in 1967 (1). although it was 1983 before a dedicated portable system was commercially available.…”

Development of a hand-held sensor probe for detection of sound components radiated from a specific device using surface intensity measurements

“…The surface intensity method is used to measure the structure-borne sound propagated from machinery or radiated from the surface of a vibrating structure [2][3][4]. This method is a promising technique for sound power measurements of individual noise sources in the presence of a noisy sound field [5,6].…”