The aim of this research is to develop and validate an experimental model testing method in the erhu instrument. analysis dependent on dynamic behavior materials which results relationships be naturally excited due structure. There are three major factors would directly affect performance vibroacoustic: (1) string, (2) vibrating skin, (3) wooden soundbox. However, transducer mass effect signifi...

Background. The importance of information technologies in public awareness of environmental issues is especially clear when a new occupational disease is identified. This is certainly the case with Vibroacoustic Disease (VAD), a whole-body noise-induced pathology, that is not particularly related to the ear. The Problem. The social and economic costs of VAD are staggering, and continuously aggr...

Vibroacoustics during space vehicle launch has been blamed for as many as 60% of first day satellite failures. At the Air Force Research Laboratory in Albuquerque NM USA, modeling and analysis was performed to determine the feasibility of various control approaches to reduce noise levels of the shroud interior. Candidate active actuation technologies included PMA’s, piezoceramics and volume-vel...

BACKGROUND Long-term low frequency noise exposure (LFN) (< or = 500 Hz, including infrasound) may lead to the development of vibroacoustic disease (VAD), a systemic pathology characterized by the abnormal growth of extra-cellular matrices. The respiratory system is a target for LFN. Fibrosis of the respiratory tract epithelia was observed in VAD patients through biopsy, and confirmed in animal ...

People with Rett syndrome (RTT) have severe communicative difficulties. They have as well an immature brainstem that implies dysfunction of the autonomic nervous system. Music plays an important role in their life, is often used as a motivating tool in a variety of situations and activities, and caregivers are often clear about people with RTTs favourites. The aim of this study was to investiga...

Modern satellites are constructed of large, lightweight equipment panels that are strongly excited by acoustic pressures during launch. During design, performing vibroacoustic analyses to evaluate and ensure the integrity of the complex electronics mounted on the panels is critical. In this study the attached equipment is explicitly addressed and how its properties affect the panel responses is...

Modern hand prostheses are capable of mimicking finger or wrist movements using electrical motors, gear mechanisms and control elements. The drive systems and the transmission mechanisms emit machinery noises which can activate or enforce a foreign body sensation by users. Transfer-path-analysis is originally developed to investigate the individual vehicle noise paths. It is a useful tool for t...