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    Wyświetlanie 1-3 z 3
    Tytuł:
    Particle localization via measurement induced entanglement
    Autorzy:
    Vasura Jayaweera, K. K. Y.
    Wijewardena Gamalath, K. A. I. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1059506.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Fluffy-Bunny entanglement
    Quantum entanglement
    photons
    position probability density
    relative position
    scattering angle
    spatial localization
    variance
    Opis:
    To explore the boundary between quantum and classical physics in the context of quantum entanglement, the particle localization via measurement induced entanglement on photons incident onto a distinguishable, massive non-interacting two-particle system was studied. The specific case of how particles acquire well defined spatial localization when light is scattered off and detected was considered. The localization process studied both qualitatively and quantitatively was observed to be valid for particles which were initially localized as well as initially completely delocalized. The localization scheme was also observed to be extremely sensitive to its initial conditions. Furthermore, a difference in the localization scheme in terms of the number of scattering events was observed between monochromatic photons and photons with variable frequencies. From all these results it was apparent that we can interpret the uniquely quantum features of entanglement in terms of classicality.
    Źródło:
    World Scientific News; 2019, 128, 2; 234-254
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Localization of sound sources in binaural reproduction of first and third order ambisonics
    Autorzy:
    Sagasti, Amaia
    Pietrzak, Agnieszka Paula
    Martin, Ricardo
    Eguinoa, Rubén
    Powiązania:
    https://bibliotekanauki.pl/articles/2202425.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    ambisonics
    localization
    spatial audio
    listening tests
    ambisonia
    lokalizacja
    dźwięk przestrzenny
    testy słuchania
    Opis:
    The use of higher-order ambisonics in spatial sound recordings makes it possible to increase the accuracy of recording information about the direction from which the sound comes to the listener. However, with binaural ambisonic sound reproduction, the listener's ability to locate the sound source accurately may be limited. This paper presents a comparison of the listener's ability to locate a sound source during binaural listening to recordings made with first and third order ambisonic microphones. The analysis was carried out for two types of signal: pink noise and ringing sound. The analysis of localization errors depending on the ambisonics order, azimuth and elevation angles as well as the type of signal is presented. The obtained data indicate that in binaural reproduction of the ambisonic sound the localization errors in the azimuth plane were smaller for the third order ambisonics, compared to the first order. In the elevation plane both for first and third order the errors were significant.
    Źródło:
    Vibrations in Physical Systems; 2022, 33, 2; art. no. 2022214
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Possibilities of spatial hearing testing in occupational medicine
    Autorzy:
    Przewoźny, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2177417.pdf
    Data publikacji:
    2016-06-28
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    spatial hearing
    directional hearing
    sound localization
    hearing testing in workers
    auditory fitness for duty
    hearing impairment
    Opis:
    Dysfunctions of the organ of hearing are a significant limitation in the performance of occupations that require its full efficiency (vehicle driving, army, police, fire brigades, mining). Hearing impairment is associated with poorer understanding of speech and disturbed sound localization that directly affects the worker’s orientation in space and his/her assessment of distance and location of other workers or, even most importantly, of dangerous machines. Testing sound location abilities is not a standard procedure, even in highly specialized audiological examining rooms. It should be pointed out that the ability to localize sounds which are particularly loud, is not directly associated with the condition of the hearing organ, but is rather considered an auditory function of a higher level. Disturbances in sound localization are mainly associated with structural and functional disturbances of the central nervous system and occur also in patients with normal hearing when tested with standard methods. The article presents different theories explaining the phenomenon of sound localization, such as interaural differences in time, interaural differences in sound intensity, monaural spectrum shape and the anatomical and physiological basis of these processes. It also describes methods of measurement of disturbances in sound localization which are used in Poland and around the world, also by the author of this work. The author analyzed accessible reports on sound localization testing in occupational medicine and the possibilities of using such tests in various occupations requiring full fitness of the organ of hearing.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2016, 29, 4; 527-538
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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