Abstract All of the senses can potentially contribute to perception and experience food drink. Sensory influences come both from or drink itself, environment in which that is tasted consumed. In this study, participants initially had pair each three soundtracks with one chocolates (varying on bitter‐sweet dimension). a second part impact various music samples these participants’ ratings taste was assessed. The results demonstrate what people hear exerts significant influence over their...

Well-balanced, semantically predictable sentence materials do not exist in the Slovak language. The primary goal of current study was to develop and validate a set sentences stationary, speech-weighted noise that are equally difficult at 50% point performance intensity curve. Listening tests were performed using fixed signal-to-noise ratio (SNR), encompassing five different SNR levels. selected validated an adaptive method. Reference data obtained from native Slovakian adults with normal...

The soundscapes of those places where we eat and drink can influence our perception taste. Here, investigated whether contextual sound would enhance the subjective value a tasting experience. customers in chocolate shop were invited to take part an experiment which they had evaluate chocolate's taste while listening auditory stimulus. Four different conditions presented between-participants design. Envisioning more ecological approach, pre-recorded piece popular music shop's own soundscape...

Acoustic scattering audibility thresholds are needed for the efficient design of performance spaces and to increase accuracy geometric room acoustic models. This paper focuses on evaluation perceptual coefficient through listening tests in simulated concert halls. It also deals with an investigation sensitivity parameters coefficients. A rectangular hall has been three prediction models, which coefficients 0.1, 0.3, 0.5, 0.6, 0.7, 0.9 were applied ceiling walls six different configurations....

Acoustical comfort in general, and the quality of speech transmission from teacher to students particular, are crucial determining educational processes schools. The acoustical treatment interior surfaces, sound insulation surrounding constructions, vocal capacity teacher, student activity noise, children's abilities hear concentrate circumstances, among many factors complex mechanism understanding. Managing rich variety measures for optimising classroom acoustics demands a multidisciplinary...

This article presents a perceptual comparison of the loudness large range 64 different typical "living room" sounds transmitted through two walls: (1) light-weight wall, composed gypsum boards mounted on metal "C" studs and (2) heavy-weight built out lime sand bricks plastered one side.The walls had (laboratory measured) sound insulation spectra, but their Rw + C50-5000 rating was same: 52 dB.Compared to massspring-mass-type wall better properties in middle frequency worse at low frequencies...

An important issues in the development of European cities is design and renovation urban public areas. Typically, broad variety approaches (sociological, ecological, environmental, physical, etc.) needed. Earlier studies show necessity transversal multidisciplinary approach this issue. In order to study acoustical dimension, concept soundscape needs be proposed elaborated. Soundscape differs from classical statistical noise analysis evaluation a context-related extrapolation environmental...

In large rooms, where many people gather such as atria, food courts or restaurants, relatively high noise levels can occur, due to so called "Lombard effect". The effect" is a reflex of vocal chords that relates changes the voice characteristics in noisy background. Typically an increase intensity, fundamental frequency, and word duration will occur. Noise enclosed place are influenced not only by amount character sound sources present, but also overall reverberation space. This article...

The development and validation of single number quantities that are meant to serve for straightforward assessment comparison airborne sound insulation properties partition walls typically challenged by the necessity perform large numbers laboratory listening tests with human subjects. This is because a reliable quantity requires testing many different wall types multiple real-life stimuli representative daily life soundscapes. In this article, an alternative approach presented allows test...

Previous work suggested a method that makes use of the Zwicker’s loudness value transmitted sound to validate single number quantities (SNQs) determining airborne insulation walls in dwellings. The correlation between ranking based on SNQ, and one was used qualify adequacy SNQ. underlying idea is adequately represents people’s perception evaluations calculated can substitute listening tests. current compares 16 SNQs: eight standardized or proposed past studies, new ones. results are more...

In this paper, with the aim of assessing deterioration speech intelligibility caused by a speaker wearing mask, different face masks (surgical masks, FFP2 homemade textile-based protection and two kinds plastic shields) are compared in terms their acoustic filtering effect, measured placing mask on an artificial head/mouth simulator. For investigating additional effects speaker’s vocal output, was also recorded while people were reading text when without mask. order to discriminate between...

Abstract This article reports on impedance tube measurements of the sound absorption coefficient α (-) selected recycled foam plastics, i.e., ethylene-vinyl acetate (EVA), polyvinyl chloride (PVC), polystyrene (PS), and polypropylene (PP), in different mixtures with a binding adhesive. The effect thickness sample spectrum as well variability across samples same composition are discussed. For EVA/ PP PS/PP mixtures, is characterized by two peaks that shift changing. These were also found to...