Development of psychoacoustic model based on the correlation of the subjective and objective sound quality assessment of automatic washing machines

Moravec, Marek; Ižaríková, Gabriela; Liptai, Pavol; Badida, Miroslav; Badidová, Anna

doi:10.1016/j.apacoust.2018.05.025

Cited by 28 publications

(10 citation statements)

References 13 publications

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“…The support bodies (4) are fixed to the pins with washers (6) and split pins (7). The rubber shells (8) of the flexible elements are firmly connected to the support bodies with flanges (9).…”

Section: Tangential Pneumatic Flexible Shaft Coupling With Axially Dementioning

confidence: 99%

“…Nowadays, the reduction of vibration and noise of machines is a very important task, mainly in terms of human health, comfort and the lifetime and safety of machines, for example [6,9,14,12]. Great emphasis is placed on the use of modern progressive technologies in order to improve electric and combustion engines for efficiency, better emissions and dynamics, for example [4,5,10].…”

Section: Introductionmentioning

confidence: 99%

“…The flanges of the pneumatic flexible elements (5) are fixed to rigid parts (8) of the driven flange and to the support bodies(7). The support bodies are fastened to rotatable floating bodies(9) by pins(10). The rotatable floating bodies are rotatably mounted on a pin(11).…”

mentioning

confidence: 99%

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New Design Solutions of Tangential Pneumatic Torsional Vibration Tuners

2019

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The optimal tuning of a mechanical system in terms of torsional dynamics is a very important function of the flexible shaft coupling, built in the system. Therefore, a flexible coupling with suitable dynamic properties has to be carefully chosen for each specific application. The main advantage of the pneumatic flexible shaft couplings, that is, torsional vibration tuners, developed at our department, is that we can easily regulate their dynamic properties, particularly their dynamic torsional stiffness during the operation of a mechanical system. In order to improve our pneumatic tuners in terms of better utilisation of their pneumatic flexible elements and achieving specific operational properties, two new pneumatic tuners with tangential arrangement of their pneumatic flexible elements were designed. The aim of this article was to introduce these new pneumatic tuners, protected by means of utility models, namely a tangential pneumatic flexible shaft coupling with axially deformed flexible elements and tangential pneumatic flexible shaft coupling with serial arranged flexible elements. Due to the fact that both mentioned pneumatic tuners are not yet

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Section: Tangential Pneumatic Flexible Shaft Coupling With Axially Dementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New Design Solutions of Tangential Pneumatic Torsional Vibration Tuners

2019

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“…The focus of research in this area is to push the vibration levels further below legal limits, thereby improving interactions in the man-machine-environment system [3]. At present, it is not possible to eliminate vibrations completely, however, it is possible to reduce them to an acceptable level [4,5,6]. The mechanical systems at the centre of attention are predominantly systems with internal combustion (IC) engines [7].…”

Section: Introductionmentioning

confidence: 99%

The potential for use of cubic nonlinear systems in internal combustion engine drivetrains

Grega

Puškár

2022

MATEC Web Conf.

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Modern-day approaches to reducing the emissions of combustion engines lead to unconventional strategies which include downspeeding, downsizing, cylinder deactivation. A common characteristic of these strategies is a shift in torque excitation components of the combustion engine. This excitation shift results in an increase in vibrations of the drivetrain and the risks associated with it. The presented article aims to investigate the elementary characteristics of the pure cubic nonlinear system and to identify the potential for its use in mechanical systems.

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“…The problem of industrial noise and its impact on the environment was presented by Sadler, who analyzed the industrial noise generated by industrial installations, and then described a proposal about how to take into account the additional effect from other types of noise from the environment and other human activities in the described area [13]. During the evaluation of noise sources, it is important to evaluate the sound quality, and not just the sound quantity, because some sounds are very annoying for people [14].…”

Section: Introductionmentioning

confidence: 99%

Proposed Options for Noise Reduction from a Wastewater Treatment Plant: Case Study

et al. 2021

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Industry and industrial complexes are often located in the proximity of people’s homes. One of the negative effects of industry is noise emissions into the surrounding environment. With the increasing concentration of the human population and the increase in industrial production, more and more people are exposed to the negative effects of noise. This article discusses a comprehensive approach to reducing noise emissions from industrial operations, and the subsequent impacts on surrounding villages and human health. The first step of the whole process is to understand the current state of the acoustic situation in industrial operation and in the nearby villages, an important part of which is the identification and localization of dominant noise sources. For this purpose, a unique noise visualization tool was used, namely, an acoustic camera. The next important step is to propose a technical solution and measures to reduce the noise of the individual source. Consequently, it is necessary to create a mathematical model, i.e., noise maps, in order to verify whether the proposed measures will be sufficient. Once the proposed measures have been implemented, verification of the effectiveness of these measures needs to be carried out through repeated noise measurements in nearby villages and also on the site of the industrial installation. The above procedure was applied to the operation of a wastewater treatment plant that was causing noise exceeding the permissible levels in the surrounding villages. The application of this approach, the implementation of the proposed measures, and the subsequent verification confirmed a significant reduction in the noise levels in the affected villages, and the measures implemented were assessed as highly effective.

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Development of psychoacoustic model based on the correlation of the subjective and objective sound quality assessment of automatic washing machines

Cited by 28 publications

References 13 publications

New Design Solutions of Tangential Pneumatic Torsional Vibration Tuners

New Design Solutions of Tangential Pneumatic Torsional Vibration Tuners

The potential for use of cubic nonlinear systems in internal combustion engine drivetrains

Proposed Options for Noise Reduction from a Wastewater Treatment Plant: Case Study

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