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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.

电子喉是一种人造喉，用于那些无法掌握其他替代语言的人。然而，这种假体使得很难产生语音信息，如语调和口音。为了改进传统的电子喉，我们提出了一种新的方法，可以让喉切除者通过他们的呼吸来控制语音语调。第一部分是一个压力传感器，它可以检测由颈部手术切口形成的人造口产生的呼气气压。第二部分是一个转换电路，可以将气压转换为语音的音高频率。第三部分是一个机电振动器，可以连接到颈部。该方法通过以下两个实验作为变换函数的参数进行评价。第一个实验是利用喉切除者的呼吸来测量音高控制的准确性，第二个实验是关于电子喉声音的自然度的心理物理学实验，从实验结果中发现，最佳转换函数为F=60+25xP，其中F是音高频率，单位为Hz，P是呼气压力，单位为cmH 20。在一天的训练后，电子喉声音的音高模式变得与正常受试者产生的模式明显相似。我们已经决定为那些不能掌握替代语言或刚刚切除喉部的人制造这种新设备。