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báo cáo hóa học:" Semantic structures of timbre emerging from social and acoustic descriptions of music"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Semantic structures of timbre emerging from social and acoustic descriptions of music | Ferrer and Eerola EURASIP Journal on Audio Speech and Music Processing 2011 2011 11 Q EURASIP Journal on http asmp.eurasipjournals.com content 2011 1 11 Audio Speech and Music Processing a SpringerOpen Journal RESEARCH Open Access Semantic structures of timbre emerging from social and acoustic descriptions of music Rafael Ferrer and Tuomas Eerola Abstract The perceptual attributes of timbre have inspired a considerable amount of multidisciplinary research but because of the complexity of the phenomena the approach has traditionally been confined to laboratory conditions much to the detriment of its ecological validity. In this study we present a purely bottom-up approach for mapping the concepts that emerge from sound qualities. A social media http www.last.fm is used to obtain a wide sample of verbal descriptions of music in the form of tags that go beyond the commonly studied concept of genre and from this the underlying semantic structure of this sample is extracted. The structure that is thereby obtained is then evaluated through a careful investigation of the acoustic features that characterize it. The results outline the degree to which such structures in music connected to affects instrumentation and performance characteristics have particular timbral characteristics. Samples representing these semantic structures were then submitted to a similarity rating experiment to validate the findings. The outcome of this experiment strengthened the discovered links between the semantic structures and their perceived timbral qualities. The findings of both the computational and behavioural parts of the experiment imply that it is therefore possible to derive useful and meaningful structures from free verbal descriptions of music that transcend musical genres and that such descriptions can be linked to a set of acoustic features. This approach not only provides insights into the definition of timbre from an ecological perspective but could also be implemented to .