功能磁共振成像环境中的集成语音增强

Integrated speech enhancement for functional MRI environment.

作者信息

Pathak Nishank, Milani Ali A, Panahi Issa, Briggs Richard

机构信息

Graduate Teaching Assistant, University of Texas at Dallas, Richardson, TX 75080, USA.

出版信息

Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:2474-7. doi: 10.1109/IEMBS.2009.5334798.

DOI:10.1109/IEMBS.2009.5334798

PMID:19964964

Abstract

This paper presents an integrated speech enhancement (SE) method for the noisy MRI environment. We show that the performance of SE system improves considerably when the speech signal dominated by MRI acoustic noise at very low SNR is enhanced in two successive stages using two-channel SE methods followed by a single-channel post processing SE algorithm. Actual MRI noisy speech data are used in our experiments showing the improved performance of the proposed SE method.

摘要

本文提出了一种适用于有噪声的磁共振成像（MRI）环境的集成语音增强（SE）方法。我们表明，当在极低信噪比（SNR）下由MRI声学噪声主导的语音信号，使用双通道SE方法在两个连续阶段进行增强，然后采用单通道后处理SE算法时，SE系统的性能会有显著提高。我们的实验使用了实际的MRI噪声语音数据，结果表明所提出的SE方法性能有所改善。