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This research aims to understand how spectral information and vocal tract adjustments in classical singers change with pitch.

Principal component analysis of the interaction between spectral band power and pitch in classical singing voices

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Principal component analysis reveals changes in vocal tract adjustments and spectral patterns in classical singing voices.

This research aims to understand how spectral information and vocal tract adjustments in classical singers change with pitch.
Analyzed vowel production from seven professional classical singers across their pitch range.
Measured energy of 16 spectral bands at 500 Hz intervals up to 8000 Hz.
Employed principal component analyses to examine spectral variation.
Identified consistent spectral energy distribution changes with increasing pitch.
Summarized spectral envelopes of vowels converge systematically at higher pitches.
Showed the influence of physiological constraints on pitch-dependent vocal tract adjustments.

Chan et al. (2025) studied this question.

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