THE STUDY OF AN EFFECT OF INTRA-ORAL AIR PRESSURE ON BODY WALL VIBRATION DURING PHONATION

我们从生理学的角度对体壁振动进行了研究，以进一步发展这一领域的研究。在持续发声过程中，测量了人体各部位振动的强度和功率谱。同时，通过测量嗓音、口内和咽内气压来分析元音和辅音的发音机制。在体壁振动和歌声频谱上发现的约3 KHz的声能集中。这个共振区被认为对应于Sundberg指定的“歌唱共振峰”。进行了定量分析（未发表）。研究了耳元音的感知音高与共振峰频率之间的关系（参考文献3，5）。对悬雍垂腭咽成形术后的发音进行了知觉和声学研究（参考文献6）。基于这些结果，为了确定无喉语音的现状，我们对接受全喉切除术的患者进行了一次回顾性问卷调查。在大坂-京都地区的971名喉切除者中，共有681人回答了调查。结果显示，使用电子喉的患者比例增加（参考文献1）。我们还通过高速螺旋CT扫描研究了作为声源器官的喉的形态，并评价了喉的三维（3-D）CT图像的临床实用性和局限性（参考文献2、4）。

We physiologically examined body wall vibration to further develop the research in this field. The intensities and power spectra of the vibration of various parts of the human body were measured during sustained phonation. At the same time, voice sound and intra-oral and intra-pharyngeal air pressure were measured to analyze the mechanism of articulation of vowels and consonants. The concentration of acoustic energy around 3 KHz as found on the spectrum of body wall vibrations and singing voice sound. This resonance area was considered to correspond to what Sundberg designated as the "Singing formant". Quantitative analysis was carried out (not published).The relationship between the perceived pitch of whispered vowels and their formant frequencies was studied (Reference 3,5). and perceptual and acoustic studies on articulation after uvulopalatopharyngoplasty were performed (Reference 6). Based on these results, to determine the present status of alaryngeal speech, a retrospective survey of patients who underwent total laryngectomy was carried out by questionnaire. A total of 681 of 971 laryngectomees in the Osaka-Kyoto area responded to the survey. The results revealed that the rate of patients using the electrolarynx increased (Reference 1). We also investigated the morphology of the larynx as a voice source organ by high speed helical CT scanning and evaluated the clinical usefulness and limitations of 3-dimensional (3-D) CT images of the larynx (Reference 2,4).