Revoile S G, Holden-Pitt L, Pickett J M
J Acoust Soc Am. 1985 Mar;77(3):1263-5. doi: 10.1121/1.392199.
Cues to the voicing distinction for final /f,s,v,z/ were assessed for 24 impaired- and 11 normal-hearing listeners. In base-line tests the listeners identified the consonants in recorded /d circumflex C/ syllables. To assess the importance of various cues, tests were conducted of the syllables altered by deletion and/or temporal adjustment of segments containing acoustic patterns related to the voicing distinction for the fricatives. The results showed that decreasing the duration of /circumflex/ preceding /v/ or /z/, and lengthening the /circumflex/ preceding /f/ or /s/, considerably reduced the correctness of voicing perception for the hearing-impaired group, while showing no effect for the normal-hearing group. For the normals, voicing perception deteriorated for /f/ and /s/ when the frications were deleted from the syllables, and for /v/ and /z/ when the vowel offsets were removed from the syllables with duration-adjusted vowels and deleted frications. We conclude that some hearing-impaired listeners rely to a greater extent on vowel duration as a voicing cue than do normal-hearing listeners.
对24名听力受损者和11名听力正常者评估了词尾/f、s、v、z/浊音区分的线索。在基线测试中，受试者识别录制的/d抑扬符C/音节中的辅音。为了评估各种线索的重要性，对通过删除和/或时间调整包含与擦音浊音区分相关声学模式的片段而改变的音节进行了测试。结果表明，缩短/v/或/z/之前的抑扬符时长，以及延长/f/或/s/之前的抑扬符时长，会显著降低听力受损组浊音感知的正确性，而对听力正常组没有影响。对于听力正常者，当音节中的擦音被删除时，/f/和/s/的浊音感知会变差；当音节中的元音偏移在元音时长调整且擦音删除的情况下被去除时，/v/和/z/的浊音感知会变差。我们我们得出结论是，一些听力受损的受试者比听力正常的受试者在更大程度上依赖元音时长作为浊音线索。
