Text-to-speech of a talking robot for interactive speech training of hearing impaired
Text-to-speech of a talking robot for interactive speech training of hearing impaired
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用于听障人士交互式语音训练的说话机器人的文本转语音
DOI：
10.1109/hsi.2017.8005021
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Sawada Hideyuki
中科院分区：
文献类型：
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作者：
Vo Nhu Thanh;Sawada Hideyuki
作者正在开发一种说话机器人，这是一种模仿人类发音系统的机械发声系统。会说话的机器人是由机械部件构成的，这些机械部件是通过参考人类发声器官的生物学和功能来制造的。在本研究中，一种新的重新设计的人工声带是为了扩大说话机器人的说话能力。采用功能性方法研制了人工声带。在密封腔中的塑料体上贴上一层7毫米宽的橡胶带，形成人工声源。声源的基频在80 Hz到280 Hz之间变化，这取决于橡皮筋的压力和橡皮筋的弯曲形状。通过伺服电机驱动的创新设计机构可调节橡皮筋的弯曲形状。施加到橡皮筋上的气压量由另一个伺服电机控制，在本研究中被称为体积电机。通过20级橡皮筋形状和10级气压输入的不同组合，让机器人发出5个元音，进行了实验，以验证具有这种新设计的声带的说话机器人的说话能力。提取每个声音的音高和音量，以确定橡皮筋形状和压力输入对输出声音的影响。结果表明，这种新设计的声带大大提高了说话机器人的说话能力，特别是其歌唱性能。
The authors are developing a talking robot which is a mechanical vocalization system modeling the human articulatory system. The talking robot is constructed with mechanical parts that are made by referring to human vocal organs biologically and functionally. In this study, a newly redesign artificial vocal cord is developed for the purpose of extending the speaking capability of the talking robot. The artificial vocal cord is developed using functional approach. A thin layer of rubber band with a width of 7mm is attached on a plastic body in a sealed chamber creates an artificial sound source. The fundamental frequency of the sound source vary from 80Hz to 280 Hz depending on the pressure to the rubber band and the curving shape of the rubber band. The curving shape of the rubber band is adjustable by an innovative design mechanism driven by a servo motor. The amount of air pressure applied to the rubber band is controlled by another servo motor which is referred as volume motor in this study. The experiment to verify the speak capability of the talking robot with this newly redesigned vocal cord is conducted by letting the robot generating five vowel sounds with difference combination of 20 levels of rubber band shape and 10 levels of air pressure input. The pitch and volume of each sound is extracted to determine the effect of the rubber band shape and the pressure input on the output sound. The result shows that this newly redesigned vocal cord greatly increase the speaking capability of the talking robot, especially its singing performance.