Timbre study on nasalics : Part V. Study on open and blocked nasalizations, Artificially derived from five oral vowels by closing respectively the terminals of nasal and buccal passages

In this paper we treated a series of artificial nasal sounds (open and blocked nasalizations each derived from five Japanese vowels by closing in turn the terminals of the nasal and buccal cavities) and discussed the timbre structures of the nasals thus obtained. We examined the influences of the blocked nose upon the oral vowel sounds and those of the closed mouth upon the nasalized vocal sounds issued through the nose. Attention was focused upon the trap action of closed cavities.