Does vowel recognition relate to pitch?
Acoustics Virtually Everywhere (AVE), Maurer et al., 2020


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Background


In vowel synthesis based on series of equal amplitude harmonics, the recognised vowel quality can be changed by either altering the frequency of a single lower amplitude harmonic or only changing the frequency spacing of the higher harmonics. In both cases, the change in vowel quality is indicated to relate to the highest common factor of the harmonics and to pitch.


Reference


Maurer, D., Suter, H. (2017): Vowel synthesis related to equal-amplitude harmonic series in frequency ranges > 1 kHz combined with single harmonics < 1 kHz, and including variation of fundamental frequency. Journal of the Acoustical Society of America, 141(5):3469.

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