International Convention on Rehabilitation Engineering & Assistive Technology最新文献_第5页

Stop consonant voicing classification for computer-assisted speech training of patients with cleft lips and palates 唇腭裂患者计算机辅助语音训练的停辅音分类

International Convention on Rehabilitation Engineering & Assistive Technology Pub Date : 2007-04-23 DOI: 10.1145/1328491.1328529

Budsamas Pholkul, P. Punyabukkana, A. Suchato

{"title":"Stop consonant voicing classification for computer-assisted speech training of patients with cleft lips and palates","authors":"Budsamas Pholkul, P. Punyabukkana, A. Suchato","doi":"10.1145/1328491.1328529","DOIUrl":"https://doi.org/10.1145/1328491.1328529","url":null,"abstract":"Cleft lips and palates (CLP) may cause functional disorders even after adequate surgical treatments, speech disorders being one of them. Automatic algorithms utilizing acoustic-phonetic knowledge are needed in developing computer-based tools for assisting the speech training of CLP patients. This work focuses on acoustic discrimination among voiced, voiceless unaspirated, and voiceless aspirated stop consonants with the same place of articulation and aims at revealing a set of acoustic measurements capable of discriminating a CLP patients' speech. Acoustic measurements based on duration and signal energy are proposed and studied. Analysis of variance and classification experiments demonstrate high potentials in using these acoustic measurements in developing automatic voicing classification algorithms for speech training tools. The overall classification accuracy of 92% is achieved in classifying non-CLP data, in which the best result obtained is 99% for the alveolar case. The proposed measurements can classify data from CLP patients with almost 90% accuracy even when the classifier is trained only on the non-CLP data.","PeriodicalId":241320,"journal":{"name":"International Convention on Rehabilitation Engineering & Assistive Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132111055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of repetitive loading on tissue oxygenation 重复负荷对组织氧合的影响

International Convention on Rehabilitation Engineering & Assistive Technology Pub Date : 2007-04-23 DOI: 10.1145/1328491.1328517

K. W. Yuen, Debbie Z Y Ou, A. Chan, E. Tam

引用次数: 0

Development of head gesture interface for electric wheelchair 电动轮椅头部手势界面的开发

International Convention on Rehabilitation Engineering & Assistive Technology Pub Date : 2007-04-23 DOI: 10.1145/1328491.1328511

Ikushi Yoda, K. Sakaue, Takenobu Inoue

引用次数: 22

Design of a wearable walking-guide system for the blind 一种可穿戴式盲人步行引导系统的设计

International Convention on Rehabilitation Engineering & Assistive Technology Pub Date : 2007-04-23 DOI: 10.1145/1328491.1328523

C. Kim, B. Song

{"title":"Design of a wearable walking-guide system for the blind","authors":"C. Kim, B. Song","doi":"10.1145/1328491.1328523","DOIUrl":"https://doi.org/10.1145/1328491.1328523","url":null,"abstract":"A wearable walking-guide system for blind people or visually handicapped is investigated and designed. The acoustic signal interface is employed for notifying the obstacle information to the user. For easy understanding, the front direction of user is divided to ten sectors and the system notifies the user to the sector in which the closest obstacle located. As a controller, the system has a microprocessor and a PDA. All of the information about obstacle in front of user is checked by three ultrasound sensor pairs and delivered to the microprocessor which analyzes the information and generates the acoustic signal for alarm. In order to avoid interference occurring by the alarm sound, the bone conduction(BC) headphone is used. It because it is set up behind ear and ear canal remained vacant to hear the environmental sound which the blind people use as one of essential signal for walking. In addition to the alarm signal, the system provides the user with guide voice using the PDA which has the text-to-speech (TTS) program for easy and safe guidance. Generally, almost of people who are blind has inclination to hide their disability, they reluctant to use the assistive device which reveals their disability. Therefore, we designed the wearable type of system and almost of the system are concealed in the clothes. We expect that blind people will use this system without any hesitation. According to the design concept, a prototype of the system was implemented and some experiments were carried out.","PeriodicalId":241320,"journal":{"name":"International Convention on Rehabilitation Engineering & Assistive Technology","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127240150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Designing auditory Kanji-character explanation for the blind 为盲人设计听觉汉字讲解

International Convention on Rehabilitation Engineering & Assistive Technology Pub Date : 2007-04-23 DOI: 10.1145/1328491.1328538

Teruyoshi Fujinuma, K. Kamata, Tetsuya Watanabe

引用次数: 0

Incorporated speech overlapped factor (Φ) into speech clarity index (Ψ): method to improve dysarthric speech severity evaluation 将语音重叠因子(Φ)纳入语音清晰指数(Ψ):改进语音困难严重程度评价的方法

International Convention on Rehabilitation Engineering & Assistive Technology Pub Date : 2007-04-23 DOI: 10.1145/1328491.1328527

P. Kayasith, T. Theeramunkong, Nuttakorn Thubthong

{"title":"Incorporated speech overlapped factor (Φ) into speech clarity index (Ψ): method to improve dysarthric speech severity evaluation","authors":"P. Kayasith, T. Theeramunkong, Nuttakorn Thubthong","doi":"10.1145/1328491.1328527","DOIUrl":"https://doi.org/10.1145/1328491.1328527","url":null,"abstract":"Dysarthria is a name given to a group of speech disorders. Our research focuses on developing an automated system for dysarthric speech assessment. Being different from traditional speech assessments which normally rely on human-perceptual analyses, this paper proposes an indicator called modified speech clarity index (ψ†). By incorporating a speech overlapped factor (φ) into the previous version of the speech clarity index (ψ), the ψ† achieves a better performance as a speech severity index and speech recognition rate predictor for people with dysarthria. A number of experiments are made to compare predicted recognition rates, generated by ψ†, with the recognition rates from HMM and ANN system. The effectiveness of the indicator is evaluated in terms of (i) root-mean-square distance, (ii) correlation coefficient, and (iii) rank-order inconsistency. The experiments on a control set and an unknown set of eight dysarthric speakers show that ψ† achieves the outstanding results when compared to the standard assessments.","PeriodicalId":241320,"journal":{"name":"International Convention on Rehabilitation Engineering & Assistive Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126627578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Surface EMG topography: a new assessment tool in low back pain rehabilitation 表面肌电图:一种新的腰痛康复评估工具

International Convention on Rehabilitation Engineering & Assistive Technology Pub Date : 2007-04-23 DOI: 10.1145/1328491.1328545

J. Mak, Yong Hu, K. Luk

{"title":"Surface EMG topography: a new assessment tool in low back pain rehabilitation","authors":"J. Mak, Yong Hu, K. Luk","doi":"10.1145/1328491.1328545","DOIUrl":"https://doi.org/10.1145/1328491.1328545","url":null,"abstract":"Among different pathologic conditions that give rise to Low Back Pain (LBP), abnormal back muscle contraction strategy was suspected to be a major contributory factor. However, studies in this area are few. The purposes of this study were to establish a reliable and objective assessment method which provide information on back muscles coordination during dynamic motion, and to testify the possible application of this method in LBP rehabilitation assessment. Back muscle surface electromyography (SEMG) was measured by an array of SEMG electrodes (7x3) during forward bending. The root mean square (RMS) of the SEMG signal was calculated as a function of both position and time to produce the SEMG topography. The SEMG topography of 30 healthy subjects served as the normal database and produced a reproducible activation pattern. SEMG topography of the 5 LBP patients presented varied activation pattern and were different from that of normal pattern. Corrective changes of contraction strategies revealed in SEMG topography patterns were found in some of the LBP patients after rehabilitation. In this study, the effectiveness of LBP rehabilitation was uncovered by SEMG topography, with a visible monitoring of rehabilitation progress. With this method, a practical and objective assessment for LBP rehabilitation is achievable.","PeriodicalId":241320,"journal":{"name":"International Convention on Rehabilitation Engineering & Assistive Technology","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121532639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microcontroller based voice-activated powered wheelchair control 基于微控制器的声控轮椅控制

International Convention on Rehabilitation Engineering & Assistive Technology Pub Date : 2007-04-23 DOI: 10.1145/1328491.1328509

J. Yi, Y. Tan, Z. Ang, S. K. Panda

{"title":"Microcontroller based voice-activated powered wheelchair control","authors":"J. Yi, Y. Tan, Z. Ang, S. K. Panda","doi":"10.1145/1328491.1328509","DOIUrl":"https://doi.org/10.1145/1328491.1328509","url":null,"abstract":"Most of the conventional electric powered wheelchairs are using joystick as a used input mode of control to maneuver the powered wheelchairs. The drawback of joystick control is that it is not suitable for physical disabled person who cannot control their movements especially the hands. The proposed voice-activated powered wheelchair supplementary with joystick control allows physically disabled person to maneuver the wheelchair easily without the need to use hands. The propelling of the powered wheelchair depends on the motor control and drive system which consists of Infineon microcontroller XC886 and Infineon DC chopper power module BTS7970B. Once the voice recognition system recognizes the voice commands in comparison to the prestored memory, the respective coded digital signals would be sent to the microcontroller which then controls the wheelchair accordingly. The prototype powered wheelchair is tested with a pay load of about 120kg. The motor drive circuit can deliver the current up to 37.5A at 12V. In this paper, the joystick control algorithm, closed-loop current control and voice recognition system would be discussed. With the implementation of closed-loop current control, the effect of jerk is reduced.","PeriodicalId":241320,"journal":{"name":"International Convention on Rehabilitation Engineering & Assistive Technology","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122506041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 21

A new method for the evaluation of gait pathology: a radar chart approach 一种评估步态病理的新方法:雷达图法

International Convention on Rehabilitation Engineering & Assistive Technology Pub Date : 2007-04-23 DOI: 10.1145/1328491.1328525

Yu Zhang, Z. Hao, Rencheng Wang, Dewen Jin

引用次数: 2

Functional electrical stimulation in rehabilitation engineering: a survey 功能电刺激在康复工程中的应用综述

International Convention on Rehabilitation Engineering & Assistive Technology Pub Date : 2007-04-23 DOI: 10.1145/1328491.1328546

Dingguo Zhang, H. G. Tan, F. Widjaja, W. T. Ang

引用次数: 57