A Modified Method for Acoustic Pulse Extraction under Noisy Environments
Authors
Menghua Cao, Zhiqiang Sun, Erling Gong, Hongwei Xie
Corresponding Author
Menghua Cao
Available Online January 2017.
- DOI
- 10.2991/icmmita-16.2016.190How to use a DOI?
- Keywords
- Acoustic Pulse; Spectral Subtraction; Frequency Band Variance; Cross-correlation
- Abstract
This paper addresses a modified method of extracting acoustic pulse based on the multi-band spectral subtraction and the frequency band variance. In this method, the acoustic pulse is detected, the noise spectrum is estimated and subtracted from the acoustic pulse spectrum. By abandoning the late reverberation and decayed part of acoustic pulse, effective part of signal is obtained. Using this method, signal-to-noise ratio (SNR) is considerably improved and cross-correlation between different channels can be well optimized.
- Copyright
- © 2017, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Menghua Cao AU - Zhiqiang Sun AU - Erling Gong AU - Hongwei Xie PY - 2017/01 DA - 2017/01 TI - A Modified Method for Acoustic Pulse Extraction under Noisy Environments BT - Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications PB - Atlantis Press SN - 2352-538X UR - https://doi.org/10.2991/icmmita-16.2016.190 DO - 10.2991/icmmita-16.2016.190 ID - Cao2017/01 ER -