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lebel:il-ne-sagit-pas-de-le-recomposer [2018/01/01 12:57] Frédéric Le Bel |
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- | ====== Il ne s'agit pas de le recomposer (2017), for augmented string quartet and fixed media. ====== | ||
- | **Abstract**\\ | ||
- | * {{:lebel:il-ne-sagit-pas-de-le-recomposer:lebel_ftdtmc-2017.pdf|}} | ||
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- | **The string quartet**\\ | ||
- | \\ | ||
- | As mentioned in the abstract, this piece was composed as a proof of concept that could allow posterior assessment of the artistic potential of such an approach to composition.\\ | ||
- | In this sense, the global structure was kept relatively primitive in order to clearly demonstrate the capabilities of the algorithmic structure alone.\\ | ||
- | That being said, the algorithm was used to composed the 'fixed media' part (tape) but not the instrumental part.\\ | ||
- | Nonetheless, since the tape was kept intact after being computed, the instrumental part had to be written accordingly.\\ | ||
- | Consequently, the taped material (its phrasing and its pitch content) was further analysed cognitively and computationally in order to inform the instrumental part.\\ | ||
- | \\ | ||
- | Schematically speaking, the algorithm was then used on three levels of the composition: the movements, the sections and the segments.\\ | ||
- | The movements of the piece come from a raw clustering ran upon the initial sound file database (about 300 different sound files ranging from 30sec to 0.5sec).\\ | ||
- | As the algorithm ended up finding six relatively clear subgroups, or timbre categories, the piece was divided into six distinct movements.\\ | ||
- | Since the machine-learning is unsupervised, meaning the classes are unknown, I'll let you the leisure of finding your own words to describe the six categories...\\ | ||
- | Then, the sections and the sub-sections are simply the result of a second run of the same algorithm on each of the previous six subgroups separately.\\ | ||
- | As described earlier, the resulting structure is a two-layer minimum spanning tree (MST) for which,\\ | ||
- | in this case, the global structure (inter-cluster) represents the sections and the local structures (intra-clusters) represents the segments.\\ | ||
- | From another perspective (bottom-up), the sound files are locally sequenced to create segments then,\\ | ||
- | these segments are themselves sequenced to create sections and finally,\\ | ||
- | the sections are also sequenced to create the movements.\\ | ||
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- | **Audio examples (tape only)**\\ | ||
- | \\ | ||
- | 1- Opaque et rugueux (2:20) | ||
- | * {{mp3play>:lebel:il-ne-sagit-pas-de-le-recomposer:i-stereo.mp3|}} | ||
- | 2- Fluide et dynamique (5:02) | ||
- | * {{mp3play>:lebel:il-ne-sagit-pas-de-le-recomposer:ii-stereo.mp3|}} | ||
- | 3- Solo électronique (3:42) | ||
- | * {{mp3play>:lebel:il-ne-sagit-pas-de-le-recomposer:iii-stereo.mp3|}} | ||
- | 4- Solo acoustique (3:22) | ||
- | * Refer to the audio recording below (reading session) at the beginning of Part 2... | ||
- | 5- Fluide et dynamique (5:12) | ||
- | * {{mp3play>:lebel:il-ne-sagit-pas-de-le-recomposer:v-stereo.mp3|}} | ||
- | 6- Fin et transparent (2:05) | ||
- | * {{mp3play>:lebel:il-ne-sagit-pas-de-le-recomposer:vi-stereo.mp3|}} | ||
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- | **Score** | ||
- | * {{:lebel:il-ne-sagit-pas-de-le-recomposer:lebel_ilnesagitpasdelerecomposer-score.pdf|}} | ||
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- | **Audio recording (reading session)**\\ | ||
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- | Version using the augmented instruments, meaning that the tape is played directly through the body of the four string instruments.\\ | ||
- | The premiere as well as a studio recording are planned at the end of January 2018 with the TANA string quartet: https://www.quatuortana.net/ \\ | ||
- | \\ | ||
- | Part 1: Movements 1, 2 and 3 | ||
- | * {{mp3play>:lebel:il-ne-sagit-pas-de-le-recomposer:lebel_ilnesagitpasdelerecomposer-readingsession_part-1.mp3|}} | ||
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- | Part 2: Movements 4, 5 and 6 | ||
- | * {{mp3play>:lebel:il-ne-sagit-pas-de-le-recomposer:lebel_ilnesagitpasdelerecomposer-readingsession_part-2.mp3|}} | ||
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- | {{ :frqsc_0.jpg?200|}} | ||
- | {{ :lebel:jim-2017:paris8.jpeg?125|}} | ||
- | {{ http://repmus.ircam.fr/_media/logo_ircam.png?w=120&h=53}} |