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The album opens with "No Te Pido Flores" ("I'm Not Requesting Flowers"), where the predominant instruments are the accordion, guitar and caja vallenata.
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Predominant instrument is a yung kum, played with bamboo sticks.
The predominant instrument may be an acoustic guitar but this is by no means folk music.
Table 10b shows the evaluation of the experimental design for predominant instrument recognition.
This actually means that the three recognition tasks are described more precisely as predominant onset detection, predominant pitch estimation, and predominant instrument recognition.
We got some unexpected results, e.g., higher pitches and shorter tones are beneficial for predominant onset detection, whereas lower pitches improve the results of predominant instrument recognition.
Predominant instrument recognition can be solved similarly to the monophonic variant, but is much harder due to the additional "noise" from the accompanying instruments [36].
Fig. 8 Mean misclassification error (MMCE) for predominant instrument recognition using the features of just one channel and the linear SVM.
For predominant instrument recognition, the three considered instruments can be almost perfectly distinguished with an error rate of 1.1% by using the auditory features and either linear SVM or RF.
Although one could assume the same predominant instrument during one song, we do not use the information about previous tones, since we want to use instrument recognition as an indicator for correctly perceived timbre.
Hence, also here, the auditory output of each song is separated into temporal segments defined by the individual tones of the predominant instrument, and for each segment corresponding to one melody tone features are extracted separately.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com