Development of a hands‐free electrolarynx for obtaining a human‐like voice using the LPC residual wave
Development of a hands‐free electrolarynx for obtaining a human‐like voice using the LPC residual wave
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DOI：
10.1002/eej.23409
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发表时间：
2022-09
影响因子：
0.4
通讯作者：
Masaki Takeuchi;Y. Soejima;Jaesol Ahn;Kunhak Lee;Ken Takaki;T. Ifukube;Ken-ichiro Yabu;Shinnosuke Takamichi;Masaki Sekino
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文献类型：
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作者：
Masaki Takeuchi;Y. Soejima;Jaesol Ahn;Kunhak Lee;Ken Takaki;T. Ifukube;Ken-ichiro Yabu;Shinnosuke Takamichi;Masaki Sekino
传统的电子喉（EL）恢复了失去声音的人的声音，但它的声音听起来像机器人，它占据了用户的一只手。因此，我们开发了一种免提可穿戴电子喉，其以LPC残留波作为振动声音来改善语音质量。我们的设备能够再现低于500 Hz的声音，这接近基频，但从1700 Hz到4000 Hz，传统EL连续显示出比我们的设备更接近用户声音频谱的频率响应。因此，发现基频带的周期性声音比个性或声音质量更接近人类语音。
The conventional electrolarynx (EL) restores the voice of people who have lost their voice, however, its voice sounds like a robot and it occupies user's one hand. Therefore, we developed a hands‐free wearable electrolarynx that improves the voice quality with the LPC residual wave as the vibration sound. Our device was able to reproduce sounds below 500 Hz, which is close to the fundamental frequency, but from 1700 Hz to 4000 Hz, the conventional EL continuously showed a frequency response closer to the spectrum of the user's vocal sound than our device. Thus, the periodic sound of the fundamental frequency band was found to be closer to human speech than individuality or sound quality.