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Wyszukujesz frazę "trombone" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Elbląskie chóry kościelne i konfesyjne, towarzystwa śpiewacze w latach 1871–1945
Elbląg church choirs and confessional choir societies 1871–1945
Autorzy:
Szkolnicka, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/2151015.pdf
Data publikacji:
2015-12
Wydawca:
Wyższe Seminarium Duchowne Diecezji Elbląskiej w Elblągu
Tematy:
Elblag
church choirs
singing societies
Cecilien movement
trombone choirs
Protestant church
Opis:
The subject of the article are church choirs and confessional choir societies that were active in Elbląg between 1871–1945. The timeframes set in the article are founding of the choir of St. Mary’s Church that was the first church choir in Elbląg and end of the second world war, as consequence of which Elbląg became a Polish city. As in the period of time considered in the article, most Elbląg inhabitants were Protestant and so was the majorityof Elbląg churches except for St. Nicholas Church and – not consecrated till 1905 though – St. Adalbert’s Church, the only catholic choir society was Cecilien-Society. The article presents history, activity and repertoire of all choirs. There are also Elbląg trombone choirs as a phenomenon typical for the Protestant Church mentioned.
Źródło:
Studia Elbląskie; 2015, 16; 147-169
1507-9058
Pojawia się w:
Studia Elbląskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trombone Transfer Functions: Comparison Between Frequency-Swept Sine Wave and Human Performer Input
Autorzy:
Beauchamp, J. W.
Powiązania:
https://bibliotekanauki.pl/articles/176612.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
brass acoustics
trombone
transfer function
nonlinear propagation
input impedance
Opis:
Source/filter models have frequently been used to model sound production of the vocal apparatus and musical instruments. Beginning in 1968, in an effort to measure the transfer function (i.e., transmission response or filter characteristic) of a trombone while being played by expert musicians, sound pressure signals from the mouthpiece and the trombone bell output were recorded in an anechoic room and then subjected to harmonic spectrum analysis. Output/input ratios of the signals’ harmonic amplitudes plotted vs. harmonic frequency then became points on the trombone’s transfer function. The first such recordings were made on analog 1/4 inch stereo magnetic tape. In 2000 digital recordings of trombone mouthpiece and anechoic output signals were made that provide a more accurate measurement of the trombone filter characteristic. Results show that the filter is a high-pass type with a cutoff frequency around 1000 Hz. Whereas the characteristic below cutoff is quite stable, above cutoff it is extremely variable, depending on level. In addition, measurements made using a swept-sine-wave system in 1972 verified the high-pass behavior, but they also showed a series of resonances whose minima correspond to the harmonic frequencies which occur under performance conditions. For frequencies below cutoff the two types of measurements corresponded well, but above cutoff there was a considerable difference. The general effect is that output harmonics above cutoff are greater than would be expected from linear filter theory, and this effect becomes stronger as input pressure increases. In the 1990s and early 2000s this nonlinear effect was verified by theory and measurements which showed that nonlinear propagation takes place in the trombone, causing a wave steepening effect at high amplitudes, thus increasing the relative strengths of the upper harmonics.
Źródło:
Archives of Acoustics; 2012, 37, 4; 447-454
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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