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I. Acoustic study: Methodology

I. Acoustic study: Methodology. 5. Data labeling and analysis Formant values were normalized using Watt & Fabricius S- centroid procedure (Watt & Fabricius 2002). I. Acoustic study: Methodology. 5.1. Raw data. I. Acoustic study: Methodology. 5.1. Raw data.

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I. Acoustic study: Methodology

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  1. I. Acoustic study: Methodology 5. Data labeling and analysis • Formant values were normalized using Watt & Fabricius S-centroid procedure (Watt & Fabricius 2002).

  2. I. Acoustic study: Methodology 5.1. Raw data

  3. I. Acoustic study: Methodology 5.1. Raw data

  4. I. Acoustic study: Methodology 5.1. Raw data

  5. I. Acoustic study: Methodology 5.1. Raw data

  6. I. Acoustic study: Methodology 5.1. Raw data

  7. I. Acoustic study: Methodology 5.2. Data normalization For each speaker: F1, F2 [i] F1, F1 [i] S (F1, F2) F1, F2 [a]

  8. I. Acoustic study: Methodology 5.2. Data normalization For each speaker: • Normalized values: • Normalized_F1_[e] = Observed_F1_[e] /S1 • Normalized_F2_[e] = Observed_F2_[e] /S2 Intra-speaker variation is in both sides of the division; hence, with normalized values, its effects are eliminated.

  9. I. Acoustic study: Methodology 5.2. Data normalization Ex. from one particular speaker: [i] = (0,75, 1,67) [u] = (0,76, 0,59) S (1, 1) [a] = (1,49, 1,08)

  10. I. Acoustic study: Methodology 5.2. Data normalization

  11. I. Acoustic study: Methodology 5.2. Data normalization

  12. I. Acoustic study: Methodology 5.2. Data normalization

  13. I. Acoustic study: Methodology 5.2. Data normalization

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