A graphical representation of the transcriptions:
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| 4Hz | 8Hz | 16Hz | 32Hz |
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The pitch center of all 4 vibratos are at C3. The pitch excursion is 1 semitone for the 4Hz and 8Hz vibratos, and 1/2 semitone downward excursion for the 16Hz vibrato. The 32Hz is perceived as having no variation in pitch.