Vibrato is shown using Ahh, as in the a in Father. In addition to putting vibrato on the sound (using an oscillator in CSound to vary the pitch), a ramp is used to gradually increase the level of vibrato (up to a semitone above to a semitone below the pitch of the note). The glissando is added to produce a slide upwards of one octave.
First three formant values: F1: 730 F2: 1100 F3: 2450