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Wyszukujesz frazę "Małecki, J." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Sound Pressure Level Analysis of Commercials and Regular Programs
    Autorzy:
    Malecki, P.
    Wiciak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537508.pdf
    Data publikacji:
    2010-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.50.Sr
    43.50.Rq
    43.50.Yw
    Opis:
    Popularity of television and multitude of commercials during the TV broadcast lead to the analysis of its sound levels. Costs of commercials' time cause producers to make commercials much louder than a regular TV program. The article shows results of commercials and regular program sound level (RMS and FFT) analysis and the difference in sound levels of commercials compared to a regular program. The analysis also shows the difference between public and private TV. The authors of the article suggest a solution to this problem and its effects.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 1; 118-122
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Subjective Assessment of the Multi-Channel Auralizations
    Autorzy:
    Małecki, P.
    Wiciak, J.
    Wierzbicki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490275.pdf
    Data publikacji:
    2012-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.55.Hy
    43.55.Mc
    43.66.Lj
    Opis:
    The article presents the course and the results of an experiment, which aimed at the subjective assessment of the multi-channel impulse responses. The assessment was conducted considering the usefulness of the received responses for the conducting operation of the digital convolution. The resulting sound material is generated for the simulation of the characteristics of the room. In a medium-sized, rectangular reverberation room (74 $m^3$) a number of measurements of impulse responses were conducted with the use of multi-channel microphone techniques and with the use of SoundField type microphone. In identical conditions the raw sound material was recorded (in conditions of free field). Next, the convolution was performed between the raw material and the recorded impulse responses. The group of experts, whose members had at least 5 years of experience in the field of sound engineering, was subjected to the psychoacoustic tests aiming at comparison of the sound materials achieved in the convolution and in the recording.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 1A; A-110-A-114
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Localization of the Sound Source with the Use of the First-order Ambisconic Microphone
    Autorzy:
    Wierzbicki, J.
    Małecki, P.
    Wiciak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1400103.pdf
    Data publikacji:
    2013-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.58.Vb
    43.60.Jn
    43.20.Ye
    Opis:
    The paper presents results of determination of sound wave direction based on signals from first-order ambisonic microphone. The experiment consisted in recording the test signals with the SoundField microphone positioned in the axis of the turntable in the anechoic chamber. The spherical coordinates of the sound intensity vector were calculated with use of three different conceptual and numerical approaches and were compared to actual values resulting from the geometry of the system. Accuracy of the localization of the sound source depending on the frequencies and the method for determination of the spherical coordinates as well as on the time constant and the parameters of the signal recording was presented. The obtained results show the effectiveness of the calculation methods used for localization of the sound source.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 6; 1114-1117
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of the Measurement Chain on the Impulse Response of a Reverberation Room and Its Application Listening Tests
    Autorzy:
    Małecki, P.
    Zastawnik, M.
    Wiciak, J.
    Kamisiński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1504421.pdf
    Data publikacji:
    2011-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.55.Hy
    43.55.Mc
    43.66.Lj
    Opis:
    There are many objective parameters of the room impulse response which we can calculate that describe its acoustic field. The room impulse response can also be used to provide listening tests using the convolution technique. The aim of this work is to consider the influence of the impulse response measurement chain on objective numerical parameters and on the subjective perception of listeners. This article shows the impulse response measurement results obtained in the reverberation room using not only commonly known measurement chain elements but other elements, too. Standard components such as an omni-directional source and measurement microphone, as well as a consumer active loudspeaker and various audio recording stereo microphone pairs were used. The results are compared taking into consideration calculated numerical parameters and the application of calculated impulse responses to subjective listening tests. To determine the applicability of impulse responses to psychoacoustic listening tests, a preliminary listening test using headphones was carried out on a selected group of listeners. The audio test material consisted of samples of choral music and speech recorded in an anechoic room and convolved with previously analyzed impulse responses. This article shows how big the differences of subjective listener feelings are for different acoustic transducers.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 6A; 1027-1030
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quietness in the Soundscape of the Białowieża National Park
    Autorzy:
    Wiciak, J.
    Mleczko, D.
    Ozga, A.
    Wszołek, G.
    Wierzbicki, J.
    Piechowicz, J.
    Małecki, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402187.pdf
    Data publikacji:
    2015-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.66.-x
    43.66.+y
    87.18.Tt
    87.19.lc
    43.50.Rq
    Opis:
    The quietness, defined as the near or complete absence of sound, in the context of the natural environment protection, may be considered a state in which no undesired of foreign sounds occur, and, by analogy to noise, analyzed in two aspects: that pertaining to measurements and the subjective one. The article discusses the lowest levels of sounds recorded at night in the soundscape of the Białowieża Forest. Due to low levels of the examined sounds and the technical problems that occurred while the sounds were being measured and registered, the acoustic examination of the measurement set-up in an anechoic chamber has also been presented. The research is aimed at defining precisely the concept of quietness prevailing in the nature in the subjective aspect by determining both the range of levels and the characteristics of preferred sounds.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 1A; A-79-A-84
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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