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Factors accountable for the aesthetic quotient of a musical piece are the main area of interest in the current study. In case of Indian Classical music, different inter-note-transitions contribute significantly to the overall musicality of the rendition. For the present study (with a popular Indian Raaga, Bilaskhani-Todi), two kinds of customized recordings were taken, one consisting of only the used notes in the Raaga (note-rendition), played in a mechanical fashion, and the other consisting of the same notes in the same sequential order, but following the note-transition rules for that particular Raaga (Raaga-rendition). Various acoustic and musical parameters were computed and compared for both the renditions, like resting-time on each note, transition-time in between notes, pitch-profiles, and intensity-plots. A detailed human-response was performed on 50 participants, to understand which rendition led to a more aesthetically pleasing experience. Finally, both renditions were used as separate input signals for EEG experiment (performed on 12 participants) to understand how differently these affected neural responses in non-musician listeners, using non-linear techniques of Multifractal-Detrended-Fluctuation-Analysis and Multifractal-Detrended-Cross-Correlation-Analysis to compute the complexity and connectivity of the extracted neural signals respectively. Results showed, in Raaga-rendition, different notes followed different transition-rules and application-times; Pitch profiles showed gliding and oscillatory movements of notes; intensity plots showed different variations of note-amplitudes. Audience-response distinctly showed over 95% of participants pointed out the Raaga-rendition to be a more aesthetically pleasing one. EEG results showed prominently high complexity and high inter-hemispheric connectivity in frontal, temporal, parietal and occipital lobes for Raaga-renditions. This novel study is an attempt to understand the detailed musical nuances of Indian Classical Music, corroborate these features with audience response and EEG results, and explore the aesthetic aspect of a musical piece, from musical, perceptive as well as neural points of views.

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Acoustic and Neural Correlates of Different Musical Transitions in Indian Classical Music

  • 会议论文

  • 发表日期：

    2025年

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  • Medha Basu,
  • Shankha Sanyal,
  • Archi Banerjee,
  • Sayan Nag,
  • Kumardeb Banerjee,
  • Dipak Ghosh

摘要

Factors accountable for the aesthetic quotient of a musical piece are the main area of interest in the current study. In case of Indian Classical music, different inter-note-transitions contribute significantly to the overall musicality of the rendition. For the present study (with a popular Indian Raaga, Bilaskhani-Todi), two kinds of customized recordings were taken, one consisting of only the used notes in the Raaga (note-rendition), played in a mechanical fashion, and the other consisting of the same notes in the same sequential order, but following the note-transition rules for that particular Raaga (Raaga-rendition). Various acoustic and musical parameters were computed and compared for both the renditions, like resting-time on each note, transition-time in between notes, pitch-profiles, and intensity-plots. A detailed human-response was performed on 50 participants, to understand which rendition led to a more aesthetically pleasing experience. Finally, both renditions were used as separate input signals for EEG experiment (performed on 12 participants) to understand how differently these affected neural responses in non-musician listeners, using non-linear techniques of Multifractal-Detrended-Fluctuation-Analysis and Multifractal-Detrended-Cross-Correlation-Analysis to compute the complexity and connectivity of the extracted neural signals respectively. Results showed, in Raaga-rendition, different notes followed different transition-rules and application-times; Pitch profiles showed gliding and oscillatory movements of notes; intensity plots showed different variations of note-amplitudes. Audience-response distinctly showed over 95% of participants pointed out the Raaga-rendition to be a more aesthetically pleasing one. EEG results showed prominently high complexity and high inter-hemispheric connectivity in frontal, temporal, parietal and occipital lobes for Raaga-renditions. This novel study is an attempt to understand the detailed musical nuances of Indian Classical Music, corroborate these features with audience response and EEG results, and explore the aesthetic aspect of a musical piece, from musical, perceptive as well as neural points of views.