Improving air traffic control speech intelligibility by reducing speaking rate effectively

Nana Hou, Xiaohai Tian, Chng Eng Siong, B. Ma, Haizhou Li
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引用次数: 2

Abstract

Low intelligibility of Air Traffic Control (ATC) speech is one major cause of aircraft accidents every year. Many factors can affect speech intelligibility, among which the most prominent aspects is the high speaking rate commonly present in ATC speech. Hence, a possible solution would be to improve intelligibility by artificially lengthening the spoken utterance to lower the speaking rate. In this work, we explore the lengthening of clean recorded ATC utterances by first identifying phoneme sequences in a given utterance. Such identified phoneme segments can then be lengthened. We will examine effects of lengthening vowels-only, consonants-only, or homogeneous lengthening. To verify our approach, we will conduct human listening test to evaluate the intelligibility. The results show 74.67% was obtained in AB preference test.
有效降低话音率,提高空管语音清晰度
空中交通管制(ATC)语音清晰度低是每年造成飞机事故的主要原因之一。影响语音清晰度的因素很多,其中最突出的是ATC语音中普遍存在的高语速。因此,一种可能的解决方案是通过人为地延长口语来降低说话速度来提高可理解性。在这项工作中,我们通过首先识别给定话语中的音素序列来探索干净记录的ATC话语的延长。这样确定的音素片段可以被延长。我们将研究只延长元音、只延长辅音或均匀延长的效果。为了验证我们的方法,我们将进行人类听力测试来评估可理解性。结果表明,AB偏好测试获得74.67%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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