感知和声学方法检测自发言语吸气位点的准确性。
Accuracy of perceptual and acoustic methods for the detection of inspiratory loci in spontaneous speech.
机构信息
School of Dentistry, National Yang-Ming University, Rm. 411, No.155, Sec. 2, Li-Nong St. Beitou District, Taipei, 11221, Taiwan.
出版信息
Behav Res Methods. 2012 Dec;44(4):1121-8. doi: 10.3758/s13428-012-0194-0.
The present study investigates the accuracy of perceptually and acoustically determined inspiratory loci in spontaneous speech for the purpose of identifying breath groups. Sixteen participants were asked to talk about simple topics in daily life at a comfortable speaking rate and loudness while connected to a pneumotach and audio microphone. The locations of inspiratory loci were determined on the basis of the aerodynamic signal, which served as a reference for loci identified perceptually and acoustically. Signal detection theory was used to evaluate the accuracy of the methods. The results showed that the greatest accuracy in pause detection was achieved (1) perceptually, on the basis of agreement between at least two of three judges, and (2) acoustically, using a pause duration threshold of 300 ms. In general, the perceptually based method was more accurate than was the acoustically based method. Inconsistencies among perceptually determined, acoustically determined, and aerodynamically determined inspiratory loci for spontaneous speech should be weighed in selecting a method of breath group determination.
本研究旨在探讨在识别呼吸组时，基于感知和声学确定的自然言语吸气位置的准确性。十六名参与者被要求以舒适的说话速度和音量谈论日常生活中的简单话题，同时连接到气动流量和音频麦克风。吸气位置的位置是根据气流动力学信号确定的，该信号作为基于感知和声学识别的位置的参考。使用信号检测理论来评估方法的准确性。结果表明，在检测停顿方面，最大的准确性（1）是基于至少有三位评委中的两位的一致性的感知基础上，（2）是基于声学基础上，使用 300 毫秒的停顿持续时间阈值。一般来说，基于感知的方法比基于声学的方法更准确。在选择呼吸组确定方法时，应权衡自然言语中基于感知、声学和气流动力学确定的吸气位置之间的不一致性。
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