Montgomery A A, Walden B E, Prosek R A
J Speech Hear Res. 1987 Mar;30(1):50-9. doi: 10.1044/jshr.3001.50.
The effects of consonantal context on vowel lipreading were assessed for 30 adults with mild-to-moderate sensorineural hearing loss who lipread videotape recordings of two female talkers. The stimuli were the vowels /i,I,alpha,U,u/ in symmetric CVC form with the consonants /p,b,f,v,t,d,f,g/ and in the asymmetric consonantal contexts /h/-V-/g/, /w/-V-/g/, /r/-V-/g/. Analyses of the confusion matrices from each talker indicated that vowel intelligibility was significantly poorer in most contexts involving highly visible consonants, although the utterances of one talker were highly intelligible in the bilabial context. Among the visible contexts, the fricative and labiodental contexts in particular produced the lowest vowel intelligibility regardless of talker. Lax vowels were consistently more difficult to perceive than tense vowels. Implications for talker selection and refinement of the concept of viseme were drawn.
对30名患有轻至中度感音神经性听力损失的成年人进行了评估，他们通过唇读两名女性谈话者的录像带，研究辅音语境对元音唇读的影响。刺激音为对称CVC形式的元音/i、I、α、U、u/，辅音为/p、b、f、v、t、d、f、g/，以及非对称辅音语境/h/-V-/g/、/w/-V-/g/、/r/-V-/g/。对每位谈话者的混淆矩阵分析表明，在大多数涉及高可见度辅音的语境中，元音清晰度明显较差，不过其中一位谈话者的话语在双唇语境中清晰度很高。在可见语境中，无论谈话者是谁，擦音和唇齿音语境尤其会导致元音清晰度最低。松元音始终比紧元音更难感知。文中还得出了关于谈话者选择和视位概念细化的相关结论。
