Comparative study on the accuracy of speech recognition using a contact microphone attached to the surface of the head and neck

IF 4.1 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Takumi Asakura, Yuki Konuma
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引用次数: 0

Abstract

The accuracy of speech recognition through an air-conducted microphone can be less accurate under a highly noisy environment or when the volume of the user’s voice is relatively low. One solution to this problem is the use of contact microphones. However, neither the microphone locations that provide optimal speech recognition accuracy for each user nor the mechanisms underlying these contact forces have been clarified. In this study, we experimentally investigated the effects of placement, contact force, user gender, and speech recognition platform on the accuracy of speech recognition with contact microphones placed on the surface of the head and neck. The experimental results indicated that the mechanism underlying the influence of each factor on speech recognition accuracy differs for speech acquired at the neck and head locations. In particular, the effect of the user’s gender was significant for the neck-acquired sound, but not the head-acquired sound. The results also revealed that the microphone contact force did not affect the recognition accuracy or user discomfort for the head-acquired sound. Moreover, the results of speech recognition experiments in a simulated noisy environment showed that bone-conducted sounds acquired on the head and neck surfaces were more robust than air-conducted sounds.

使用附在头颈部表面的接触式麦克风进行语音识别准确性比较研究
在高度嘈杂的环境中,或当用户的语音音量相对较低时,通过空气传导麦克风进行语音识别的准确性可能较低。解决这一问题的方法之一是使用接触式麦克风。然而,无论是为每个用户提供最佳语音识别准确度的麦克风位置,还是这些接触力的基本机制,都尚未得到阐明。在本研究中,我们通过实验研究了放置在头颈部表面的接触式麦克风的位置、接触力、用户性别和语音识别平台对语音识别准确率的影响。实验结果表明,对于在颈部和头部位置获取的语音,各因素对语音识别准确率的影响机制是不同的。特别是,用户的性别对颈部获取的声音有显著影响,但对头部获取的声音影响不大。实验结果还显示,麦克风的接触力不会影响识别准确度,也不会影响用户对头部获取声音的不适感。此外,在模拟嘈杂环境中进行的语音识别实验结果表明,从头部和颈部表面获得的骨传导声音比空气传导声音更稳定。
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来源期刊
Sensors and Actuators A-physical
Sensors and Actuators A-physical 工程技术-工程:电子与电气
CiteScore
8.10
自引率
6.50%
发文量
630
审稿时长
49 days
期刊介绍: Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...
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