IEICE TRANSACTIONS on Fundamentals
Speech Enhancement for Laser Doppler Vibrometer Dealing with Unknown Irradiated Objects
Summary :
The acquisition of distant sound has always been a hot research topic. Since sound is caused by vibration, one of the best methods for measuring distant sound is to use a laser Doppler vibrometer (LDV). This laser has high directivity, that enables it to acquire sound from far away, which is of great practical use for disaster relief and other situations. However, due to the vibration characteristics of the irradiated object itself and the reflectivity of its surface (or other reasons), the acquired sound is often lacking frequency components in certain frequency bands and is mixed with obvious noise. Therefore, when using LDV to acquire distant speech, if we want to recognize the actual content of the speech, it is necessary to enhance the acquired speech signal in some way. Conventional speech enhancement methods are not generally applicable due to the various types of degradation in observed speech. Moreover, while several speech enhancement methods for LDV have been proposed, they are only effective when the irradiated object is known. In this paper, we present a speech enhancement method for LDV that can deal with unknown irradiated objects. The proposed method is composed of noise reduction, pitch detection, power spectrum envelope estimation, power spectrum reconstruction, and phase estimation. Experimental results demonstrate the effectiveness of our method for enhancing the acquired speech with unknown irradiated objects.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E106-A No.4 pp.647-656
- Publication Date
- 2023/04/01
- Publicized
- 2022/09/30
- Online ISSN
- 1745-1337
- DOI
- 10.1587/transfun.2022EAP1036
- Type of Manuscript
- PAPER
- Category
- Digital Signal Processing
Authors
Chengkai CAI
Ritsumeikan University
Kenta IWAI
Ritsumeikan University
Takanobu NISHIURA
Ritsumeikan University
Keyword
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Chengkai CAI, Kenta IWAI, Takanobu NISHIURA, "Speech Enhancement for Laser Doppler Vibrometer Dealing with Unknown Irradiated Objects" in IEICE TRANSACTIONS on Fundamentals,
vol. E106-A, no. 4, pp. 647-656, April 2023, doi: 10.1587/transfun.2022EAP1036.
Abstract: The acquisition of distant sound has always been a hot research topic. Since sound is caused by vibration, one of the best methods for measuring distant sound is to use a laser Doppler vibrometer (LDV). This laser has high directivity, that enables it to acquire sound from far away, which is of great practical use for disaster relief and other situations. However, due to the vibration characteristics of the irradiated object itself and the reflectivity of its surface (or other reasons), the acquired sound is often lacking frequency components in certain frequency bands and is mixed with obvious noise. Therefore, when using LDV to acquire distant speech, if we want to recognize the actual content of the speech, it is necessary to enhance the acquired speech signal in some way. Conventional speech enhancement methods are not generally applicable due to the various types of degradation in observed speech. Moreover, while several speech enhancement methods for LDV have been proposed, they are only effective when the irradiated object is known. In this paper, we present a speech enhancement method for LDV that can deal with unknown irradiated objects. The proposed method is composed of noise reduction, pitch detection, power spectrum envelope estimation, power spectrum reconstruction, and phase estimation. Experimental results demonstrate the effectiveness of our method for enhancing the acquired speech with unknown irradiated objects.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.2022EAP1036/_p
Copy
@ARTICLE{e106-a_4_647,
author={Chengkai CAI, Kenta IWAI, Takanobu NISHIURA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Speech Enhancement for Laser Doppler Vibrometer Dealing with Unknown Irradiated Objects},
year={2023},
volume={E106-A},
number={4},
pages={647-656},
abstract={The acquisition of distant sound has always been a hot research topic. Since sound is caused by vibration, one of the best methods for measuring distant sound is to use a laser Doppler vibrometer (LDV). This laser has high directivity, that enables it to acquire sound from far away, which is of great practical use for disaster relief and other situations. However, due to the vibration characteristics of the irradiated object itself and the reflectivity of its surface (or other reasons), the acquired sound is often lacking frequency components in certain frequency bands and is mixed with obvious noise. Therefore, when using LDV to acquire distant speech, if we want to recognize the actual content of the speech, it is necessary to enhance the acquired speech signal in some way. Conventional speech enhancement methods are not generally applicable due to the various types of degradation in observed speech. Moreover, while several speech enhancement methods for LDV have been proposed, they are only effective when the irradiated object is known. In this paper, we present a speech enhancement method for LDV that can deal with unknown irradiated objects. The proposed method is composed of noise reduction, pitch detection, power spectrum envelope estimation, power spectrum reconstruction, and phase estimation. Experimental results demonstrate the effectiveness of our method for enhancing the acquired speech with unknown irradiated objects.},
keywords={},
doi={10.1587/transfun.2022EAP1036},
ISSN={1745-1337},
month={April},}
Copy
TY - JOUR
TI - Speech Enhancement for Laser Doppler Vibrometer Dealing with Unknown Irradiated Objects
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 647
EP - 656
AU - Chengkai CAI
AU - Kenta IWAI
AU - Takanobu NISHIURA
PY - 2023
DO - 10.1587/transfun.2022EAP1036
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E106-A
IS - 4
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - April 2023
AB - The acquisition of distant sound has always been a hot research topic. Since sound is caused by vibration, one of the best methods for measuring distant sound is to use a laser Doppler vibrometer (LDV). This laser has high directivity, that enables it to acquire sound from far away, which is of great practical use for disaster relief and other situations. However, due to the vibration characteristics of the irradiated object itself and the reflectivity of its surface (or other reasons), the acquired sound is often lacking frequency components in certain frequency bands and is mixed with obvious noise. Therefore, when using LDV to acquire distant speech, if we want to recognize the actual content of the speech, it is necessary to enhance the acquired speech signal in some way. Conventional speech enhancement methods are not generally applicable due to the various types of degradation in observed speech. Moreover, while several speech enhancement methods for LDV have been proposed, they are only effective when the irradiated object is known. In this paper, we present a speech enhancement method for LDV that can deal with unknown irradiated objects. The proposed method is composed of noise reduction, pitch detection, power spectrum envelope estimation, power spectrum reconstruction, and phase estimation. Experimental results demonstrate the effectiveness of our method for enhancing the acquired speech with unknown irradiated objects.
ER -
English
