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Wyświetlanie 1-2 z 2
Tytuł:
Perceptual Evaluation of the Effect of Threshold in Selective Mixing of Sounds
Autorzy:
Kleczkowski, P.
Pluta, M.
Powiązania:
https://bibliotekanauki.pl/articles/1196825.pdf
Data publikacji:
2014-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
43.60.Hj
43.60.+d
43.75.Zz
43.66.Lj
Opis:
Signal processing methods make possible such a mixing of signals that their overlapping in the time-frequency plane is reduced. This can be achieved by reducing the number of overlapping signals by discarding contributions from weaker signals and leaving only contributions from stronger ones. When applied to acoustic signals, this is referred to by the authors as selective mixing of sounds. Previous research has shown, that this rule, when applied to signals of musical instruments can provide some perceptual advantages over simple adding up the sound sources. In this paper, an experiment was carried out to determine the threshold of the value of relative energy of sound sources to control the decision about discarding a contribution from a particular sound source.
Źródło:
Acta Physica Polonica A; 2014, 125, 4A; A-117-A-121
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Masking a Frequency Band in a Musical Fragment Played by a Single Instrument
Autorzy:
Kleczkowski, P.
Plewa, M.
Pluta, M.
Powiązania:
https://bibliotekanauki.pl/articles/1504380.pdf
Data publikacji:
2011-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
43.66.Dc
43.66.Lj
43.66.Ba
43.60.Hj
Opis:
The phenomenon of masking in the environment of musical sounds has not yet been deeply investigated. An experiment was conducted to find out whether masking of a band of frequencies in a musical instrument sound by the remaining spectral content of that instrument could be explained by "energetic" masking, i.e. masking resulting from overlapping patterns of excitation on the basilar membrane. An isolated, about one octave wide, band of frequencies of the saxophone sound playing a couple of notes legato was masked alternatively by two maskers: CBN - the band of noise occupying the same frequency range plus the remaining spectral content of the saxophone sound, and BN - the same band of noise acting alone. For both maskers, the level of noise was increased gradually to detect the respective thresholds of masking. Masker CBN was more efficient in masking by about 15 dB, indicating that the harmonics below and above the analysed band contributed substantially more to masking than noise inside the band. As energetic masking of those harmonics was weak, non-energetic or "informational" masking prevailed.
Źródło:
Acta Physica Polonica A; 2011, 119, 6A; 991-995
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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