Study fora Practical Use of an Electolarynx with a Pitch Control Function Using Expiration

具有使用呼气的音调控制功能的电子喉的实际使用研究

基本信息

批准号：
06559001
负责人：
IFUKUBE Tohru
金额：
$ 4.93万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06559001/
关键词：
Speech Welfare technology Artificiallarynx Intonation Substitute speech Laryngectonee 代用発声ピッチ制御

项目摘要

An electrolarynx is one of the artificial larynges for people who have failed to master the other substitute speech. However, this prosthesis makes it difficult to produce phonetic information such as intonation and accent. In order to improve a conventional electrolarynx, we have proposed a new method that can allow laryngectomees to control voice intonation by using their respiration.This device consists of three parts. The first part is a pressure sensor that can detect expiration air pressure produced from a stoma made by a surgical incision into the neck. The second part is a transformation circuit that can convert air pressure into a pitch frequency for voice. The third part is an electromechanical vibrator that can be attached to the neck. This method was evaluated through the following two experiments as a parameter of a transform function. The first one was an experiment to measure the accuracy of pitch control using the respiration of laryngectomees and the second one was psychophysical experiments regarding the degree of naturalness of the electrolarynx voice.From the experimental results, the optimal transform function was found to be F=60+25xP,where F is the pitch frequency in Hz and P is the expiration pressure in cmH20. The pitch pattern of the electric larynx voice became clearly similar to the pattern produced from a normal subject after one day training. We have decided to manufacture the new device for the people who can not master the substitute speech or have just had their larynx removed.

电脑电是未能掌握另一个替代演讲的人的人工喉部之一。但是，这种假体使得很难产生语音和口音等语音信息。为了改善常规的电脑膜化，我们提出了一种新方法，该方法可以允许喉头通过使用呼吸来控制语音语调。该设备由三个部分组成。第一部分是一个压力传感器，可以检测由手术切口到颈部产生的造口产生的过期气压。第二部分是一个转换电路，可以将气压转换为音高频率的声音。第三部分是可以连接到颈部的机电振动器。通过以下两个实验作为转换函数的参数评估了该方法。第一个是一个实验，可以使用喉头的呼吸来测量俯仰控制的准确性，第二个是关于电子自然语音程度的心理物理实验。从实验结果中，最佳变换函数被发现为f = 60+25xp，其中f是Hz和p的peper频率，其中p是hz和p的频率。一日训练后，电力喉音的音高模式与正常受试者产生的模式显然相似。我们决定为无法掌握替代演讲或刚刚去除喉部的人们制造新设备。