無反射管による喉頭原音の抽出法

抄録

A reflectionless tube described by Sondhi is utilized to obtain the glottal waveform.
The rationale of this method is that the effect of vocal-tract resonances on glottal waveform is considerably reduced by phonating into a reflectionless uniform tube.
Measurement of the transmission characteristic (frequency response) of the tube proved minimal attenuation caused by the tube.
The obtained glottal waveform in four normal subjects and in nine patients with laryngeal pathologies are reported herein and methods presently available for estimating the glottal waveform are also discussed. The glottal waveform with reflectionless tube proved to be simpler and more practical for clinical use.