“音高和响度”图形利用瞬时频率Fx和声压峰值+Ax,对整个元音的每个声带振动周期加以表示。“嗓音建立”由声压Sp和喉电描记图Lx的波形图来表示(图7)。图6中声带闭合瞬间是人工加上去的,而图7中声带闭合瞬间是利用Lx波形的前导边缘自动检测出来的。周期的时长比用声信号更加容 The Pitch and Loudness graph uses the instantaneous frequency Fx and the sound pressure peak + Ax to represent each vocal tract vibrational period of the entire vowel. The “voice establishment” is represented by the waveform diagrams of the sound pressure Sp and the laryngeal electrogram Lx (FIG. 7). The vocal fold closure is manually added in Figure 6, while the vocal closure in Figure 7 is automatically detected using the leading edge of the Lx waveform. The duration of the cycle is more tolerant than the acoustic signal