Perceptual importance of the voice source spectrum from H2 to 2 kHz
Perceptual importance of the voice source spectrum from H2 to 2 kHz
复制标题
从 H2 到 2 kHz 的语音源频谱的感知重要性
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
M. Garellek
中科院分区：
文献类型：
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作者：
J. Kreiman;M. Garellek
对源频谱进行建模需要了解语音源的不同频谱域属性的感知重要性。尽管人们对 H1-H2 和高频谐波在质量感知中的作用有所了解，但在其他频率范围中感知上重要的频谱细节的程度尚不清楚。该实验检验了二次和四次谐波 (H2-H4) 之间幅度差异的感知重要性，该差异随着发声和音高模式的语言上显着变化而变化。为了进一步确定灵敏度是否取决于 H1-H2 还是 F0，我们合成了非病理性男性声音 (F0=100 Hz) 和女性声音 (F0 = 200 Hz)，并针对三个不同的 H1-H2 水平在 20 dB 范围内以 1 dB 增量操纵 H2-H4 的值。听众以 1-up、2-down 自适应范式听到一对刺激，并通过方差分析 (ANOVA) 评估作为 F0 和 H1-H2 函数的 H2-H4 的可觉差异变化。讨论将集中于 H2-H4 灵敏度与 F0、H1-H2 共变的程度以及 H4 以上频谱的形状。 [工作由 NSF 和 NIH 支持。]
Modeling the source spectrum requires understanding of the perceptual importance of different spectral-domain attributes of the voice source. Although the roles of H1-H2 and high-frequency harmonics in quality perception are somewhat understood, the extent of spectral detail that is perceptually significant in other frequency ranges is not known. This experiment examined the perceptual importance of amplitude difference between the second and fourth harmonics (H2-H4), which varies with linguistically significant changes in mode of phonation and pitch. To further determine if sensitivity depends on H1-H2 or on F0, we synthesized non-pathological male (F0=100 Hz) and female voices (F0 = 200 Hz) and manipulated the values of H2-H4 by 1 dB increments over a 20 dB range, for three different H1-H2 levels. Listeners heard pairs of stimuli in a 1-up, 2-down adaptive paradigm, and variations in just-noticeable-difference for H2-H4 as a function of F0 and H1-H2 were assessed with analysis of variance (ANOVA). Discussion will focus on the extent to which H2-H4 sensitivity covaries with F0, H1-H2, and the shape of the spectrum above H4. [Work supported by NSF and NIH.]