Spicer J, Schmidt R, Ward C D, Pinnington L L
Derby Assistive Technology Evaluation Centre, Derby Hospitals NHS Foundation Trust, UK.
J Med Eng Technol. 2005 May-Jun;29(3):137-44. doi: 10.1080/03091900500067769.
The primary aim of this study was to assess a range of desktop text telephones and to provide comparative data to enable healthcare professionals and users to make informed choices when selecting products. Our second objective was to highlight the effect of different product features on ease of communication.
We used three methods of evaluation. (1) User trials of seven desktop textphones were carried out by 28 people. (2) The same desktop textphones, along with three portable models, were appraised by two independent assessors. (3) All 10 products were discussed by groups of hearing and hearing-impaired users-112 in all.
Participant ratings, user comments, and observations of sample conversations all revealed that ease of communication was greatly influenced by the type of technology employed to connect the textphone to the telephone network. Overall, conversations held on text telephones with a direct connection were more successful and produced fewer garbled messages than those made with an acoustic connection. Although individual preferences were expressed, other defining features such as the size of keyboard, display type and size of text did not have a comparable impact on communication. Future research and development could focus on the design of products that would cater simultaneously for the communication needs of hearing, deaf and speech-impaired users.
本研究的主要目的是评估一系列台式文本电话，并提供比较数据，以便医疗保健专业人员和用户在选择产品时能够做出明智的选择。我们的第二个目标是突出不同产品功能对通信便利性的影响。
我们采用了三种评估方法。（1）28人对七台台式文本电话进行了用户试用。（2）两名独立评估人员对相同的台式文本电话以及三款便携式型号进行了评估。（3）听力正常和听力受损的用户群体对所有10款产品进行了讨论，总共112人。
参与者评分、用户评论以及对样本对话的观察均表明，将文本电话连接到电话网络所采用的技术类型对通信便利性有很大影响。总体而言，与通过声学连接的文本电话相比，直接连接的文本电话进行的对话更成功，乱码信息更少。尽管存在个人偏好，但其他决定性特征，如键盘大小、显示屏类型和文本大小，对通信的影响并不相同。未来的研发可以专注于设计能够同时满足听力正常、失聪和言语障碍用户通信需求的产品。
