A discriminative post-filter for speech enhancement in hearing AIDS

Ying Hui Lai, Syu Siang Wang, Pei Chun Li, Yu Tsao

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

For hearing aid (HA) devices, speech enhancement (SE) is an essential unit aiming to improve signal-to-noise ratio (SNR) and quality of speech signals. Previous studies, however, indicated that user experience with current HAs was not fully satisfactory in noisy environments, suggesting that there is still room for improvement of SE in HA devices. This study proposes a novel discriminative post-filter (DPF) approach to further enhance the SNR and quality of SE processed speech signals. The DPF uses a filter to increase the energy contrast (discrimination) of speech and noise segments in a noisy utterance. In this way, SNR and sound quality of speech signals can be improved, and annoying musical noises can be suppressed. To verify the effectiveness of DPF, the present study integrates DPF with a previously proposed generalized maximum a posteriori spectral amplitude estimation (GMAPA) SE method. Experimental results demonstrated that when comparing to GMAPA alone, this integration can further improve output SNR and perceptual evaluation of speech quality (PESQ) scores and effectively suppress musical noises across various noisy conditions. Due to its low-complexity, low-latency, and high-performance, DPF can be suitably integrated in HA devices, where computational efficiency, power consumption, and effectiveness are major considerations.

原文English
主出版物標題2015 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2015 - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
頁面5868-5872
頁數5
ISBN(電子)9781467369978
DOIs
出版狀態Published - 4 8月 2015
事件40th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2015 - Brisbane, Australia
持續時間: 19 4月 201424 4月 2014

出版系列

名字ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2015-August
ISSN(列印)1520-6149

Conference

Conference40th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2015
國家/地區Australia
城市Brisbane
期間19/04/1424/04/14

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