- 311 -Mazzola, Guerino / Noll, Thomas / Lluis-Puebla, Emilio: Perspectives in Mathematical and Computational Music Theory 
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would begin on the first beat of the measures (»Die melodischen Motive, die ihren Ursprung in den ersten Takten des Satzes haben, passen in das 3 4 -Metrum. Sie klingen, als wären ihre Anfangstöne jeweils auf der >Eins< des Taktes. So sind sie aber nicht notiert.«18
 
18  
Epstein (1994, p. 10)
). Moreover the syncopations of the horns (see viola in figure 21) disturb the emergence of any downbeats (» ... nivellieren die scheinbar nie endenden Hörnersynkopen jegliches Gefühl für einen Schwerpunkt.«19
 
19  
Epstein (1994, p. 10)
). The same passage (Frisch1990) discusses as a »massive canonic and metrically disorienting episode«20
 
20  
Frisch (1990, p. 155)
.


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Figure 21: Measures 136 ff.


The metric weight of a greater segment including this passage (measures 127-155) in figure 22 allows no correspondence to any possible time signature whatsoever due to the great metric weights on the first, third, fourth and sixth eighths of the measures. Hence it confirms Epstein’s observation of metric uncertainty.

The analysis of the bassoon, violins, cello and bass already discussed in the beginning (see figure 3), which form the melodic voice, confirms Epstein’s observation regarding the second beats of the measures. The greatest metric weights are located on the second beats of the measures, the periodicity of the weight respects the layers of strong and weak beats of 3 4 . Hence metric coherence can be found, a phase shift takes place.

The metric weight of the instrumental parts characterized by the syncopations (see figure 23) shows a periodicity which does not correspond to any time signature whatsoever. Great metric weights are located on the third and fourth sixteenths as well as on the seventh and eighth sixteenths and the eleventh and twelfth sixteenths. It confirms Epstein’s observation that these syncopations are responsible for a lack of a clear metricity within this passage.


PIC
Figure 22: Metric weight of measures 127-155



PIC
Figure 23: Metric weight of clarinet, horn, and viola (measures 127-155)


Inner metric analysis of the entire exposition of the first movement brought to light three different parts of regularities. Furthermore we detected new characteristics of inner metric structure within these parts by choosing smaller contexts, such as segments or voicing. These characteristics were not inherent in the analysis


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- 311 -Mazzola, Guerino / Noll, Thomas / Lluis-Puebla, Emilio: Perspectives in Mathematical and Computational Music Theory