Schmitt J F, Moore S W, Lass N J
Department of Communicative Disorders, University of Alabama, Tuscaloosa 35487.
J Aud Res. 1986 Jul;26(3):183-90.
Normal-hearing volunteers (N:30, aged 19-28 yrs) yielded intelligibility scores for W-22 word lists and CID sentences at 40 db re each S's SRT, and judgments on a 7-pt scale ("very pleasant"----"very unpleasant") for Sentence 3 of Fairbanks' "Rainbow Passage". Normal and time-altered speeds (60%: compression; 140%: expansion) were compared between the widely-used but obsolescent Lexicon Varispeech (VSp) unit vs the commercially available Variable Speech Control Model A-7 which incorporates a time-sampling technique similar to the VSp. With both VSp and VSC, intelligibility was nearly perfect at all three speeds, and thus both appear equally suitable for intelligibility studies, but at the 60% and 140% speeds the signal clarity was significantly preferable for the VSp system (p less than .01 in both cases), by .6 of a scale interval at 60% and 1.8 interval at 140%. Furthermore, the VSC does not operate beyond the 60-140% range, as occasionally may be desirable in research on the effects of time alteration on speech reception.
听力正常的志愿者（N = 30，年龄19 - 28岁）在比每个受试者的言语接受阈高40分贝的情况下，给出了W - 22单词列表和CID句子的可懂度得分，并对费尔班克斯“彩虹段落”的句子3进行了7级评分（“非常愉悦”——“非常不悦”）。比较了广泛使用但已过时的Lexicon Varispeech（VSp）单元与采用与VSp类似的时间采样技术的商用可变语音控制模型A - 7在正常速度和变速（60%：压缩；140%：扩展）下的表现。对于VSp和可变语音控制（VSC），在所有三种速度下可懂度都近乎完美，因此两者似乎同样适用于可懂度研究，但在60%和140%的速度下，VSp系统的信号清晰度明显更优（两种情况下p均小于0.01），在60%时为0.6个刻度间隔，在140%时为1.8个刻度间隔。此外，VSC在60 - 140%范围之外无法运行，而在关于时间改变对言语接收影响的研究中，偶尔可能需要超出这个范围。
