Estimation method of glottal vocal efficiency based on conversion function of voice source
-
摘要: 在澄清嗓音源概念的基础上提出了一种以嗓音源变换函数为基础的声门发声效率估计方法。将嗓音源变换函数定义为声门上声学嗓音源与声门气流体积速度波在频域上的比值。通过精心设计的活体犬喉及人体发声实验分别在不同元音、压紧嗓音、气声、假声和典型喉病变条件下。采用稳态元音发声方式对这一新的声门发声效率估计方法实验研究；并与其他发声效率方法综合比较。结果表明，该方法能消除上声道传输与共鸣作用的影响，能反映不同发声方式的差异；频域平均声门发声效率反映了物理定义上的声门发声效率的变化，而声门基频发声效率的变化与AC/DC比值变化一致。Abstract: This investigation was designed to approach a novel estimation method of glottal vocal efficiency（GVE） based on conversion function of voice source. The conversion function of voice source was defined the ratio of supraglottal acoustic signals and glottal air volume flow velocity waveforms in frequency domain A carefully designed in vivo canine larynx experiment and several human experiments including different vowels, pressed, falsetto, breath and typical laryngeal diseases were adopted to analysis this alternative GVE method. Compared with other vocal efficiency, it is shown that this method could eliminate the contribution from the super vocal tract transmission and resonance to GVE. and reflect the differences of phonation patterns. The average magnitude of this conversion function in frequency domain represents GVE, and the variation of the magnitude in fundamental frequency is identical to AC/DC value.
-
计量
- 文章访问数: 41
- HTML全文浏览量: 2
- PDF下载量: 4
下载:
