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vibroacoustic
Wave6 Calculates Vibration and Noise in Vibroacoustic Environments
Sound Pressure Level Sound pressure levels of structures refer to the maximum acoustic force perceptible by human ears at a given distance. A higher sound pressure level indicates louder structures; longer distances must be covered in order for louder structures to reach our ears and thus more energy is expended in reaching them – hence […]
Vibroacoustic Stimulation for Fetal Assessment
Vibroacoustic stimulation (VAS) is an easy test used during labor if a cardiotocograph trace (CTG) becomes nonreassuring; its primary aim is reducing unnecessary cesarean deliveries while preventing acidaemia in newborns. VAS involves applying low-frequency sounds and vibrations directly to the uterus, prompting physiological responses such as increased heart rate acceleration and transient tachycardia in fetuses. […]
Vibro-Acoustic Sound Attenuators
Inertial actuators positioned along the boundary of a structural opening can achieve both vibration control and sound attenuation; however, finding their optimal placement requires taking into account how your system responds to noise excitation. Engineered materials with exceptional broadband energy dissipation performance have long been sought across a range of engineering disciplines, as they often […]
Fetal Vibroacoustic Stimulation
Fetal Reactivity to Acoustic Stimulation has been observed since 1925 and used in multiple clinical settings. Fetoacoustic stimulation offers several distinct advantages over other tests: It is simple, inexpensive and non-invasive. This randomised trial seeks to compare the effects of vibroacoustic stimulation and halogen light stimulation on an unsatisfying nonstress test result (NST). Background Fetal […]
Vibroacoustic Disease
Long-term exposure to low frequency noise (LFN) is harmful to health. This acoustic stressor causes symptoms that affect many physiological systems in the body, including: perimetal thickening without inflammation process; depressions, increased irritability and aggressiveness; extracellular matrix changes and abnormalities in cardiovascular structures. This pathology has been coined “vibroacoustic disease.” Unfortunately, its existence has received […]