in recent years, need to increase the convenience of trips in railway vehicles causes that train operators and manufacturers focus on reducing the noise level which is sensed by passengers. in this paper, first the state of modeling acoustic noise in cab train is discussed and natural frequencies and acoustic mode shapes are derived and then formulation of acoustic pressure in the cab will be o...

The aim of this study is to propose a method for the evaluation of railway passengers’ comfort in relationship to temperature, noise, and vibration. Estimated the single comfort for every sensation considered, the global comfort is evaluated with the Hyper-Sphere Method proposed by Corriere & Lo Bosco [1]. The humanvehicle-infrastructure-environment variables which influence comfort are individ...

Although bus comfort is a crucial indicator of service quality, existing studies tend to focus on passenger load and ignore in-vehicle time, which can also affect passengers' comfort perception. Therefore, by conducting surveys, this study examines passengers' comfort perception while accounting for both factors. Then, using the survey data, it performs a two-way analysis of variance and shows ...

This paper describes the design and first experimental results of a novel test setup to measure the impact response of a rotating tire. The test setup is based on a tire on tire principle, which requires less space than a classic drum (rigid rotating cylinder). The setup is used to analyse mechanisms of tire/road noise during road impact excitations, such as a cobbled roads, joints of a concret...

Previous studies suggested that individuals generally had high preferences for natural sounds. Natural sounds like water sounds and bird songs added to noises were determined to be able to improve the quality of acoustic environment. Although it has been revealed how different types of water sounds would affect the preferences for environment differently when adding to road traffic to noises, l...

The purpose of this work was to investigate the sound environment of public parks using a soundscape study model that analyzes not only noise but also all the types of sound of a given area, as well as other environmental factors. To this end, acoustic measurements were made in the parks under study and interviews were held with their frequent visitors. Noise measurements were conducted in 55 p...

Cerebral palsy is a group of neurodevelopmental disorders that affect a person's ability to move and to maintain balance and posture. People with cerebral palsy have also perception and space orientation deficits so that special assistance devices should be developed to compensate these handicaps. The objective was to optimize an adapted electric bicycle (E-bike) for youths with neurodevelopmen...

Based on continuous research work as well as on growing demands of all involved it is widely agreed today that acoustic comfort in cities should aim for more than just preventing and controlling given noise. However, in practice this typically fails because of two dilemmas: Acoustical aspects are considered too late and with a limited scope only, limited to make other non-acoustic planning acou...

Indoor environmental quality (IEQ) has been found to influence children’s health and behaviour, particularly conditions, such as attention deficit hyperactivity disorder (ADHD). This research aimed ascertain whether housing IEQ impacted the symptoms of ADHD its related behaviours. study involved 435 parents children adolescents (aged 5–17) with residing in Australia. We utilised an online surve...

Over the last few years, customer demands regarding acoustic performance, along with the tightening of legal regulations on noise emission levels and human exposure to noise, have made the noise and vibration properties into important design criteria for agricultural machinery cabins. In this framework, both experimental analysis procedures for prototype testing as well as reliable numerical pr...