Recording speech articulation in dialogue: Evaluating a synchronized double electromagnetic articulography setup

Recording speech articulation in dialogue: Evaluating a synchronized double electromagnetic articulography setup
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记录对话中的语音发音:评估同步双电磁发音术设置

DOI:
10.1016/j.wocn.2013.07.002
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发表时间:
2013
影响因子:
1.9
通讯作者:
Geng C
Geng C
中科院分区:
人文科学1区
文献类型:
--
作者:
Geng C

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我们展示了一个实验设施,是面向收购的发音数据,从语言使用中常见的各种语音风格,通过两个同步的电磁articulography(EMA)设备的可操作性。这种方法综合了语音研究的真实的对话环境的优点,并详细描述了语音产生的生理现实。我们描述了该设施的方法,用于获取同步的音频流的两个扬声器和系统,使控制室技术人员,实验人员和参与者之间的通信。此外,我们证明了这种方法的可行性,通过评估固有的问题,这个特定的设置:第一个问题是时间同步的两个EMA机器的准确性,第二个是两台机器之间的电磁干扰的严重程度。我们的研究结果表明,所使用的同步方法产生约1毫秒的精度。电磁干扰是从复值信号的幅度推导出来的。将该因变量作为干扰机器的发射机的记录状态(即开/关)的函数进行分析。机器间距离在1 m和8.5 m之间变化。结果表明,大约6.5米的距离是适当的,以实现数据质量可比的单扬声器录音。
We demonstrate the workability of an experimental facility that is geared towards the acquisition of articulatory data from a variety of speech styles common in language use, by means of two synchronized electromagnetic articulography (EMA) devices. This approach synthesizes the advantages of real dialogue settings for speech research with a detailed description of the physiological reality of speech production. We describe the facility's method for acquiring synchronized audio streams of two speakers and the system that enables communication among control room technicians, experimenters and participants. Further, we demonstrate the feasibility of the approach by evaluating problems inherent to this specific setup: The first problem is the accuracy of temporal synchronization of the two EMA machines, the second is the severity of electromagnetic interference between the two machines. Our results suggest that the synchronization method used yields an accuracy of approximately 1 ms. Electromagnetic interference was derived from the complex-valued signal amplitudes. This dependent variable was analyzed as a function of the recording status – i.e. on/off – of the interfering machine's transmitters. The intermachine distance was varied between 1 m and 8.5 m. Results suggest that a distance of approximately 6.5 m is appropriate to achieve data quality comparable to that of single speaker recordings.
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