We study the question of how intrinsic variations (associated with the speaker rather than the recording environment) affect text-independent speaker verification performance. Experiments using the SRI-FRTIV corpus,which systematically varies both vocal effort and speaking style, reveal that (1) "furtive" speech poses a significant challenge; (2) conversations and interviews, despite stylistic differences, are well matched; (3) high-effort oration, in contrast to high-effort read speech, shares characteristics with conversational and interview styles; and (4) train/test pairings are generally symmetrical. Implications for further work in the area are discussed.
Bibliographic reference. Shriberg, Elizabeth / Graciarena, Martin / Bratt, Harry / Kathol, Andreas / Kajarekar, Sachin S. / Jameel, Huda / Richey, Colleen / Goodman, Fred (2008): "Effects of vocal effort and speaking style on text-independent speaker verification", In INTERSPEECH-2008, 609-612.