Wyniki wyszukiwania - Biblioteka Nauki

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Pursuing Listeners’ Perceptual Response in Audio-Visual Interactions – Headphones vs Loudspeakers: A Case Study

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Mróz B. , Kostek B.

Archives of Acoustics

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2022

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tom Vol. 47, No. 1

71--79

EN

This study investigates listeners’ perceptual responses in audio-visual interactions concerning binaural spatial audio. Audio stimuli are coupled with or without visual cues to the listeners. The subjective test participants are tasked to indicate the direction of the incoming sound while listening to the audio stimulus via loudspeakers or headphones with the head-related transfer function (HRTF) plugin. First, the methodology assumptions and the experimental setup are described to the participants. Then, the results are presented and analysed using statistical methods. The results indicate that the headphone trials showed much higher perceptual ambiguity for the listeners than when the sound is delivered via loudspeakers. The influence of the visual modality dominates the audio-visual evaluation when loudspeaker playback is employed. Moreover, when the visual stimulus is present, the headphone playback pattern of behavior is not always in response to the loudspeaker playback.

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Occupancy of tourist accommodation establishments in Poland – comparison of 2019, the period of COVID-19 pandemic and the subsequent months of 2020

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Nocoń M. , Sondel K. , Mróz B. , Jurzak L.

Geography and Tourism

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2021

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tom Vol. 9, No. 1

83--94

EN

The paper aims to present changes in terms of the use of tourist accommodation establishments in Poland in 2020 as compared to the year preceding the coronavirus COVID-19 pandemic. The authors focus primarily on the desk research method, analysing in detail the news releases presented by Statistics Poland (Central Statistical Office) in relation to the subject of the article. The authors obtained answers to the posed research questions. The main conclusion of the article is that the use of tourist accommodation facilities in Poland decreased drastically after the outbreak of the COVID-19 coronavirus pandemic, which was most noticeable in voivodeships featuring high density of accommodation facilities.

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Management of the National Parks in the context of cooperation with the local stakeholders

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Walas B. , Łabaj M. , Mróz B. , Košek M.

Geography and Tourism

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2021

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tom Vol. 9, No. 1

21--32

EN

When searching for an optimal model for managing National Parks in Poland, especially in view of the planned modification of the law, it is necessary to assess attitudes and expectations between local stakeholder groups. Surveys conducted in 2020 made it possible to collect the opinions of representatives of the parks’ surroundings and their employees on the subject of relations between parks and the socio-economic environment. The obtained results positively verified the hypothesis that nature protection policy requires changes to the management of the National Parks through effective legal and financial instruments, including those generating consensus of benefits for the local economy and stakeholders, while maintaining the objectives of environmental protection.

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Reverberation divergence in VR applications

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Rolkowski P. , Odya P. , Mróz B.

International Journal of Electronics and Telecommunications

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2024

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tom Vol. 70, No. 2

373--380

EN

This project aimed to investigate the correlation between virtual reality (VR) imagery and ambisonic sound. With the increasing popularity of VR applications, understanding how sound is perceived in virtual environments is crucial for enhancing the immersiveness of the experience. In the experiment, participants were immersed in a virtual environment that replicated a concert hall. Their task was to assess the correspondence between sound scenes (which differed in reverberation times and their characteristics) and the observed invariant visual scene. The research was conducted using paired tests. Participants were asked to identify the sound scene they considered more closely matched the concert hall seen in the VR goggles for each pair. Each sound scene differed in the employed impulse response. All the impulse responses were recorded in real venues such as concert halls, auditoriums, churches, etc. To provide a realistic auditory experience, the sound scenes were processed using third-order ambisonics and decoded using binaural techniques with HRTFs. The virtual concert hall was generated using the Unreal Engine and was the same for all the tests. One of the major conclusions drawn from the conducted research was confirming the role of spatial sound in creating immersive VR experiences. The study demonstrated that appropriately matching spatial sound to the VR visual scene is essential for achieving complete immersion. Additionally, expectations and preferences regarding reverberation characteristics in different types of spaces were discovered. These findings have significant implications for the design of virtual environments, and understanding these aspects can contribute to improving VR technology and creating more immersive and realistic virtual experiences for users.