Acoustic interpretation of the voice range profile (phonetogram).
Acoustic interpretation of the voice range profile (phonetogram).
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音域轮廓（音标）的声学解释。
DOI：
10.1044/jshr.3501.21
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
Titze,IR
中科院分区：
文献类型：
--
作者：
Titze,IR
音域分布(VRP)是声强范围相对于基频(F0)的显示。过去的测量表明，强度范围在F0范围的极端处减小，随着F0的增加，高强度和低强度边界逐渐向上倾斜，并且在边界处存在涟漪。声源谐波调谐到共振峰产生的强度波动在上边界比下边界更明显，因为高次谐波在接近发声阈值时不像在最大肺压时那样有效地被激发。强度边界的逐渐倾斜是由于在更高的基频上更有效地传输和辐射声能所致。然而，这取决于源功率的频谱分布。在低F0时，较小的光谱斜率(更多的谐波能量)会产生更大的强度。另一方面，在高F0时，能量向基本方向的转移会导致更大的强度。这种强度对源功率光谱分布的依赖似乎解释了在较高F0时强度范围减小的原因。一个不相关的问题是，在低F0时强度范围减小，这是因为当声门下压力增加时，防止F0上升的固有困难。
The voice range profile (VRP) is a display of vocal intensity range versus fundamental frequency (F0). Past measurements have shown that the intensity range is reduced at the extremes of the F0range, that there is a gradual upward tilt of the high- and low-intensity boundaries with increasing F0, and that a ripple exists at the boundaries. The intensity ripple, which results from tuning of source harmonics to the formants, is more noticeable at the upper boundary than the lower boundary because higher harmonics are not energized as effectively near phonation threshold as at maximum lung pressure. The gradual tilt of the intensity boundaries results from more effective transmission and radiation of acoustic energy at higher fundamental frequencies. This depends on the spectral distribution of the source power, however. At low F0, a smaller spectral slope (more harmonic energy) produces greater intensity. At high F0, on the other hand, a shift of energy toward the fundamental results in greater intensity. This dependence of intensity on spectral distribution of source power seems to explain the reduced intensity range at higher F0. An unrelated problem of reduced intensity range at low F0stems from the inherent difficulty of keeping F0from rising when subglottal pressure is increased.