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    Wyświetlanie 1-3 z 3
    Tytuł:
    The Study of the Influence of the Ceiling Structure on Acoustics in Contemporary Churches
    Autorzy:
    Sygulska, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/177532.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    church acoustics
    reverberation time in the church
    contemporary church
    church architecture
    Opis:
    The paper discusses acoustic problems in the contemporary Catholic church, and presents a study of the influence of the ceiling structure on acoustics in the interior for two types of ceiling structures, i.e. the truss type and the reinforced concrete one. The investigations involved six contemporary churches: three buildings with a truss type ceiling and three buildings with a reinforced concrete ceiling. The results reveal that in churches with a truss type ceiling, acoustic parameters reach values close to recommendations. In contrast, churches with a concrete ceiling create very unfavourable acoustic conditions. The investigations rendered it possible to calculate the sound absorption coefficient for the truss type cover.
    Źródło:
    Archives of Acoustics; 2019, 44, 1; 169-184
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Auditory Spatial Illusion – A Psychoacoustic Study in Young Adults
    Autorzy:
    Maleki, Mehri
    Ahadi, Mohsen
    Jafarpisheh, Amirsalar
    Asgharzadeh, Amin
    Baghban, Alireza Akbarzadeh
    Toufan, Reyhane
    Powiązania:
    https://bibliotekanauki.pl/articles/31339750.pdf
    Data publikacji:
    2024
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    auditory spatial illusions
    the Franssen effect
    interaural time difference
    binaural temporal resolution
    Opis:
    The Franssen illusion, or Franssen effect (FE), is one of the auditory spatial illusions. Few studies have explored the FE, and the mechanisms underlying it remain unknown. The present study was conducted to clarify the FE occurrence with different tasks and presentation modes in young adults. It also sought to investigate possible neurophysiological similarities between interaural time difference (ITD) cue processing and FE perception. FE perception was evaluated using two different tasks and two presentation modes (i.e., insert phones and loudspeakers). Sound reflections (reverberation) were presented in the diffuse field (loudspeaker mode). ITD performance was investigated using different stimuli delivered via insert phones. No significant difference between the two FE perception tasks was found (F1;25 = 0:138, p = 0:713). However, the FE perception showed a significant difference between the two presentation modes (F1;25 = 434:03, p < 0:001). Spearman’s correlation did not reveal a significant relationship between FE perception and ITD scores (p > 0:05). The current findings show the importance of reverberation in the FE occurrence. Also, the non-significant correlation between the results of the behavioral binaural temporal resolution test and FE perception in young people with normal temporal resolution may indicate that room reflections (reverberation) complicate the ability to process ITDs (rather than poor ITD processing for the “steady state” portion of signal).
    Źródło:
    Archives of Acoustics; 2024, 49, 1; 19-26
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of Reverberation Time in Classrooms Using the Residual Minimization Method
    Autorzy:
    Nowoświat, A.
    Olechowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/177635.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    reverberation time
    Sabine's formula
    classroom
    residual minimization method
    coefficient correcting the Sabine’s model
    ODEON
    Opis:
    The objective of the residual minimization method is to determine a coefficient correcting the Sabine’s model. The Sabine’s equation is the most commonly applied formula in the designing process of room acoustics with the use of analytical methods. The correction of this model is indispensable for its application in rooms having non-diffusive acoustic field. The authors of the present paper will be using the residual minimization method to work out a suitable correction to be applied for classrooms. For this purpose, five different poorly dampened classrooms were selected, in which the measurements of reverberation time were carried out, and for which reverberation time was calculated with the use of theoretical methods. Three of the selected classrooms had the cubic volume of 258.5 m3 and the remaining two had the cubic volume of 190.8 m3. It was sufficient to estimate the correction for the Sabine’s equation. To verify the results, three other classrooms were selected, in which also the measurements of reverberation time were carried out. The results were verified by means of real measurements of reverberation time and by means of computer simulations in the program ODEON.
    Źródło:
    Archives of Acoustics; 2017, 42, 4; 609-617
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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