A standard set of American-English voiced stop-consonant stimuli from morphed natural speech

作者：Stephens Joseph D W^*; Holt Lori L

来源：Speech Communication, 2011, 53(6): 877-888.

DOI：10.1016/j.specom.2011.02.007

• Speech stimuli
• Consonants
• Linear predictive coding

Linear predictive coding (LPC) analysis was used to create morphed natural tokens of English voiced stop consonants ranging from /b/ to /d/ and /d/ to /g/ in four vowel contexts (/i/, /ae/, /a/, /u/). Both vowel consonant vowel (VCV) and consonant vowel (CV) stimuli were created. A total of 320 natural-sounding acoustic speech stimuli were created, comprising 16 stimulus series. A behavioral experiment demonstrated that the stimuli varied perceptually from /b/ to /d/ to /g/, and provided useful reference data for the ambiguity of each token. Acoustic analyses indicated that the stimuli compared favorably to standard characteristics of naturally-produced consonants, and that the LPC morphing procedure successfully modulated multiple acoustic parameters associated with place of articulation. The entire set of stimuli is freely available on the Internet (http://www.psy.cmu.edu/similar to lholt/php/StephensHoltStimuli.php) for use in research applications.

• 出版日期2011-7