A query to ask the selected Formant object for the frequency of the specified formant at the specified time.
the bandwidth in hertz or Bark. If Time is not within half a frame width of any frame centre, or if Formant number is greater than the number of formants in the frame, the value is undefined; otherwise, the formant is considered to belong to the frame whose centre is nearest to Time.
If possible (i.e. if the adjacent frame has enough formants), a linear interpolation is performed between the centre of the frame and the centre of the adjacent frame. With Bark units, the hertz-to-Bark transformation is performed before interpolation.
© ppgb, October 16, 1999