Human Vocal Tract Length

<b>Dataset Description</b><br>This dataset comprises recordings collected from nine native American English speakers, including five males (M1, M2, M3, M4, M5) and four females (F1, F3, F4, F5), aged between 20 and 46 years. All participants reported no hearing or speaking impairments.<b>Vocal Tract Length (VTL) Measurement</b><b>1st column</b>: The lowest resonance frequency, Φ=c/4L​, was calculated for a lossless uniform tube of length L, where c=35300cm/s (speed of sound). Here, L represents the Vocal Tract Length (VTL), which was measured using real-time magnetic resonance imaging (MRI) videos.<b>Acoustic Features</b><b>2nd column</b>: Fundamental Frequency (F0F_0F0​) in Hz.<b>3rd to 6th columns</b>: Scaled formant values:f1/1: first formant scaled by 1f2/3: second formant scaled by 3f3/5: third formant scaled by 5f4/7: fourth formant scaled by 712 Mel-Frequency Cepstral Coefficients (MFCCs). The 0th-order MFCC coefficient was excluded.For additional information: P. Vasquez-Serrano, J. Reyes-Moreno, Rodrigo Capobianco Guido, Alexander Sepúlveda-Sepúlveda, <b>MFCC Parameters of the Speech Signal: An Alternative to Formant-Based Instantaneous Vocal Tract Length Estimation</b>, <i>Journal of Voice</i>, 2023, ISSN 0892-1997, https://doi.org/10.1016/j.jvoice.2023.05.012