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Wyszukujesz frazę "speech quality" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Subjective Assessment of the Speech Signal Quality Broadcasted by Local Digital Radio in Selected Locations in Wroclaw under Studio and Home Conditions
Autorzy:
Brachmański, Stefan
Kin, Maurycy
Zemankiewicz, Patrycja
Powiązania:
https://bibliotekanauki.pl/articles/2200727.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Digital Audio Broadcasting
speech quality
quality assessment
Opis:
In October 2018, local digital radio was launched to cover the agglomeration of Wroclaw. The implementation of this undertaking required many tests, including qualitative ones, that refer to both music and speech. This paper presents the results of subjective tests based on the evaluation of speech quality of signals recorded at various points in Wroclaw. Measurements were carried out in accordance with the recommendations of the International Telecommunication Union as well as in ordinary acoustic conditions in listeners’ flats. The rating was made for male and female voices. The most important conclusion is that for speech signal assessment in meaning of the quality the test conditions do not influence the obtained results. The other fact confirmed in the experiment was that the receiving place of DAB+ signal in the Single-Frequency Network also does not affect the perceived voice quality.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 4; 687--693
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality Assessment of Musical and Speech Signals Broadcasted via Single Frequency Network DAB+
Autorzy:
Kin, Maurycy
Brachmański, Stefan
Powiązania:
https://bibliotekanauki.pl/articles/226936.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
quality evaluation
digital broadcasting
single frequency network
speech quality
music quality
Opis:
Paper presents the results of quality assessment of speech and music signals transmitted via DAB+ system with the use of Single Frequency Network (SFN). The musical signals were evaluated in overall quality domain. The subjective research was provided with the use of Absolute Category Rating procedure according to the ITU recommendation and the results have been presented as the MOS values for various bit rates. The speech signals were additionally examined with PESQ method. The results have shown that the assumed quality of 4 MOS, for this kind of broadcasting could be achieved at 48 kb/s for speech and 64 kb/s for music. This fact was confirmed by both: subjective and objective research. The comparison between the results obtained for SFN broadcasting with three emitters with single-emitter broadcast was presented.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 1; 139-144
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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