Sperry J L, Wiley T L, Chial M R
Department of Communicative Disorders, University of Wisconsin-Madison 53706, USA.
J Am Acad Audiol. 1997 Apr;8(2):71-80.
Word recognition performance was measured for 18 normal-hearing subjects using the female talker version of the Northwestern University Auditory Test No. 6 (NU-6) in the presence of three background competitors: (1) a meaningful multitalker competing message consisting of three male and three female talkers (forward multitalker competing message [FCM]), (2) the same multitalker competing message recorded in reverse to eliminate semantic content (backward multitalker competing message [BCM]), and (3) an amplitude-modulated speech-spectrum noise (SSN) having the same long-term average spectrum and amplitude fluctuations as the meaningful multitalker competing message. The meaningful competitor had a significantly more deleterious effect on recognition performance compared to performance for the two nonmeaningful competitors. Furthermore, the nonmeaningful speech competitor produced a significantly greater degradation in performance than that for the SSN.
使用西北大学听觉测试第6号（NU - 6）的女性说话者版本，对18名听力正常的受试者在三种背景竞争声音存在的情况下进行单词识别性能测试：（1）一个由三名男性和三名女性说话者组成的有意义的多说话者竞争信息（正向多说话者竞争信息[FCM]），（2）将相同的多说话者竞争信息倒录以消除语义内容（反向多说话者竞争信息[BCM]），以及（3）一种具有与有意义的多说话者竞争信息相同的长期平均频谱和幅度波动的调幅语音频谱噪声（SSN）。与两种无意义竞争声音相比，有意义的竞争声音对识别性能的有害影响显著更大。此外，无意义的语音竞争声音导致的性能下降明显大于SSN。
