Analyzing the effect of secondary excitations of the vocal tract on vocal intensity in different loudness conditions. - Paavo Alku; Juha Vintturi; Erkki Vilkman (ICSLP, 1998)

On the linearity of the relationship between the sound pressure level and the negative peak amplitude of the differentiated glottal flow in vowel production. - Paavo Alku; Juha Vintturi; Erkki Vilkman (Speech Commun., 1999)

The use of fundamental frequency raising as a strategy for increasing vocal intensity in soft, normal, and loud phonation. - Paavo Alku; Juha Vintturi; Erkki Vilkman (INTERSPEECH, 2001)

Measuring the effect of fundamental frequency raising as a strategy for increasing vocal intensity in soft, normal and loud phonation. - Paavo Alku; Juha Vintturi; Erkki Vilkman (Speech Commun., 2002)