The distorting effects of SCBA equipment on speech and algorithms for mitigation
The distorting effects of SCBA equipment on speech and algorithms for mitigation
复制标题
SCBA 设备对语音的失真影响和缓解算法
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
Robert J. Novorita
中科院分区：
文献类型：
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作者：
W. Kushner;S. M. Harton;Robert J. Novorita
公共安全人员之间高质量、可靠的通信对于完成任务同时维护自身健康和安全至关重要。 SCBA面罩送气系统是一些公共服务活动中必不可少的设备，公共服务通信系统设计必须考虑其对语音的影响。 SCBA 面罩封闭面部和嘴巴，并改变发音和语音频谱。除了环境噪声之外，SCBA 系统噪声（例如警报和空气调节器噪声）也会加剧 SCBA 通信系统中语音质量的恶化。在数字通信系统中，损坏的语音会影响编解码器性能，增加清晰度下降的可能性。本文介绍了 SCBA 设备的一些失真对语音质量影响的研究。它还描述了两种旨在减轻失真影响的信号处理算法。
High quality, reliable communications between public safety personnel is essential for accomplishing missions while maintaining their own health and safety. The SCBA mask air delivery system is essential equipment in some public service activities, and its effects on speech must be considered in public service communications system designs. An SCBA mask encloses the face and mouth and alters articulation and the speech spectrum. SCBA system noises such as alarms and air regulator noise, in addition to environmental noises, add to the deterioration of speech quality in an SCBA-fronted communication system. In digital communication systems, corrupted speech affects codec performance increasing the potential for diminished intelligibility. This paper describes a study of some of the distortion effects of SCBA equipment on speech quality. It also describes two signal processing algorithms designed to mitigate some of the effects of the distortion.