KANSEI (Emotional) Information Classifications of Music Scores Using Self Organizing Map
We classified KANSEI (emotional) information for musical compositions by using only the notes in the music score. This is in contrast to the classification of music by using audio files, which are taken from a performance with the emotional information pr
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1 Iwate University Super Computing and Information Sciences Center, Morioko, Iwate 020-8550, Japan [email protected] Faculty of Education, Iwate University, Morioko, Iwate 020-8550, Japan [email protected]
Abstract. We classified KANSEI (emotional) information for musical compositions by using only the notes in the music score. This is in contrast to the classification of music by using audio files, which are taken from a performance with the emotional information processed by the instrumentalists. The first is classification into one of two classes, duple meter or irregular meter. The second is classification into one of the two classes, slow vs. fast (threshold tempo: ♩ = 110). The classification of the musical meter is based on identifying the meter indicated in the score. For tempo classification, we generally used the tempo indication in the score, but we evaluate classification that includes tempo revisions through a subject’s emotions to be accurate. We performed classification for both the meter and tempo evaluations with a recognition rate above 70 % by using self-organizing maps for unsupervised online training. Particularly, in the tempo classification, a computer successfully processed the emotional information directed. Keywords: KANSEI information Emotional information classification Self-organizing Feature map
Music score
1 Introduction Most musical research of an information technology nature is based on audio files that are the result of a person performing a music score, and the research involves carrying out classification after obtaining characteristics such as frequency [1–5]. Such studies do not include processing of human KANSEI, which is described as sensibility or emotion. Instead, these studies consider musics as information that has already been processed by human emotion. Studies based on the score itself have been conducted [6–8], but virtually no studies have covered the processing of emotional information. The score does not include all of the information about a music [9–12]. The lines of notes printed in the score provide a framework, but in order to transform them into musical phrases that do not sound unnatural or mechanical, it is necessary for the instrumentalist to perform (transform) the music while relying on information not written in the score [9, 10]. Note that a phrase consists of a certain number of notes that are grouped together, including melody, bass, etc. © Springer International Publishing Switzerland 2016 H. Fujita et al. (Eds.): IEA/AIE 2016, LNAI 9799, pp. 574–586, 2016. DOI: 10.1007/978-3-319-42007-3_50
KANSEI (Emotional) Information Classifications
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Information Indicated in the Score and Information Processing Using Emotions
Included in the score are the notes to be played at various times by various parts and instruments, along with symbols related to expression. If the notes are played with “mathematical correctness” (e.g., by a synthesizer), the performance sounds extremely artificial [9]. Various reasons for this can be surmised. One rea
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