Darwin C J, Sandell G J
Experimental Psychology, University of Sussex, Brighton, England.
J Acoust Soc Am. 1995 May;97(5 Pt 1):3135-8. doi: 10.1121/1.411874.
When a single harmonic close to the first formant frequency is mistuned by about 8%, that harmonic makes a reduced contribution to the vowel's first formant frequency as measured by a shift in the phoneme boundary along an F1 continuum between /I/ and /epsilon/ [C.J. Darwin and R.B Gardner, J. Acoust. Soc. Am. 79, 838-45 (1986)]. In the present experiments, phoneme boundaries along an /I/-/epsilon/ continuum were measured for vowels differing in F1 whose fourth harmonic (500 Hz) was mistuned by 0, +/- 3, +/- 6, or +/- 9%. All the harmonics of a vowel (including the mistuned one) were given either no FM or coherent FM at a rate of 6 Hz and modulation depth of +/- 5%. The results replicated the previous findings, but found no evidence for coherent FM preventing the segregation of the mistuned harmonic from the vowel.
当一个接近第一共振峰频率的单谐波失谐约8%时，如通过音素边界沿/I/和/ε/之间的F1连续统的移动所测量的那样，该谐波对元音的第一共振峰频率的贡献会减少[C.J.达尔文和R.B.加德纳，《美国声学学会杂志》79, 838 - 45 (1986)]。在本实验中，测量了F1不同的元音沿/I/-/ε/连续统的音素边界，这些元音的第四谐波（500赫兹）失谐了0、±3、±6或±9%。元音的所有谐波（包括失谐的谐波）要么不给予调频，要么以6赫兹的速率和±5%的调制深度给予相干调频。结果重复了先前的发现，但没有发现相干调频能防止失谐谐波与元音分离的证据。
