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    Wyświetlanie 1-4 z 4
    Tytuł:
    Subjective Evaluation of Classroom Acoustics by Teenagers vs. Reverberation Time
    Autorzy:
    Leśna, P.
    Skrodzka, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537505.pdf
    Data publikacji:
    2010-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.55.Hy
    Opis:
    A questionnaire was developed to evaluate acoustics in classrooms. The group of 279 pupils from 7 schools in age from 11 till 17 years were tested. The subjective evaluation was accompanied by objective measurements of reverberation time in 11 classrooms. The questionnaire was based on five point differential scales and consisted of six questions about acoustic comfort, teacher voice clarity, speech comprehension, evaluation of different noise sources intensity, annoyance and consequences of noise in the classroom. The results of statistical analysis of subjective answers and physical measurements of reverberation time were correlated. After analysis it was found that clarity of teacher voice and speech comprehension scores lowered for increasing reverberation time and was not statistically significant. Acoustic comfort score was also lower for increasing reverberation time but only in a group of pupils older than 12 years. For children under 12 years the results of questionnaire's analysis were not so clear as for older pupils.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 1; 115-117
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Performance in Selected Auditory Tasks by Blind and Visually Impaired Children and Teenagers
    Autorzy:
    Bogusz, E.
    Koprowska, H.
    Skrodzka, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490303.pdf
    Data publikacji:
    2012-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.66.Hg
    Opis:
    The present work discusses results concerning sound perception obtained in selected auditory tasks, such as pitch discrimination and pitch-timbre categorization for blind and visually impaired subjects (children and teenagers). Listeners were divided into two age groups: 7-13 year olds and 14-18 year olds. The study tested 20 individuals (8 congenitally blind and 12 visually impaired) and 20 sighted persons comprising reference groups. The timing of the experiments was as short as possible due to the fact that our listeners were children. To date, no study has described results of such experiments for blind/visually handicapped children and teenagers. It was shown that the performance of blind/visually impaired participants was not as good as that of blind adults in pitch discrimination and pitch-timbre categorization tasks. These results may have implications for the development of auditory training in orientation and mobility of young visually handicapped people.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 1A; A-013-A-018
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Vibratory Detection Thresholds on Proximal Phalange and Wrist in Blind and Visually Impaired Teenagers
    Autorzy:
    Bogusz, E.
    Mrozik, G.
    Skrodzka, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490359.pdf
    Data publikacji:
    2012-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.66.Wv
    Opis:
    The paper presents results concerning vibratory detection thresholds measured on a wrist and proximal phalange and fingertips of the index, middle and ring fingers for blind and visually impaired teenagers. Subjects with vision dysfunctions were divided into two groups: congenitally blind and visually impaired. The study tested 10 handicapped individuals (5 congenitally blind and 5 visually impaired) and 10 sighted persons making reference groups chosen to be adequate in terms of age, gender, body mass and height. To date, no study has described results of such experiments for blind/visually handicapped teenagers. Vibratory perception thresholds were tracked using the Bekesy algorithm. The thresholds were investigated as a function of stimulating force frequency and magnitude or an area of a stimulating probe. Threshold values obtained for the wrist were higher than values obtained for proximal phalange and fingertips. It was shown that the performance of blind/visually impaired teenagers was not better than their sighted counterparts. Suggestions about technical form and physical parameters of a vibrating device signalling places particularly dangerous for blind/visually handicapped people were formulated.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 1A; A-019-A-023
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Concept of the Auditory Training for Blind and Visually Impaired Children and Teenagers
    Autorzy:
    Skrodzka, E.
    Maciągowski, M.
    Furmann, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1197515.pdf
    Data publikacji:
    2014-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.66.Yw
    43.66.Hg
    43.66.Jw
    43.66.Qp
    Opis:
    The paper was inspired by the hitherto published results concerning provision of efficient assistance to visually impaired persons by means of acoustic and vibratory signals. The aim of the auditory training is to shorten the time necessary for execution of auditory information processing, sensibilize blind persons to differences in sounds and teach them to focus auditory attention on small differences in parameters of acoustic waves, in order to achieve independent and correct interpretation of environment by hearing and listening. The basic concept of the auditory training addressed to blind or visually impaired children and teenagers is presented in detail. Preliminary verification of the effectiveness of training of young adults without vision impairments has not shown statistically significant differences in performance before and after the training. Possible reasons for such an effect are pointed out and solutions are suggested.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 4A; A-31-A-37
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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