章雒霏,张铭,李晨.一种新的手机双麦克风消噪系统*[J].,2017,36(1):32-40 |
一种新的手机双麦克风消噪系统* |
A new dual microphone noise suppression system for handset |
投稿时间:2016-04-08 修订日期:2017-01-15 |
中文摘要: |
针对现有的手机双麦克风消噪系统无法应对多种复杂的噪声环境在消除噪声的同时会引起语音失真等问题,本文提出了一种新的手机双麦克风消噪系统,该系统将时域与频域处理相结合,在噪声估计和噪声消除两个方面均做了改进,结合双麦克风和单麦克风的噪声估计算法,提高了噪声估计的准确性,同时将基音检测与消噪处理相结合,在语音帧中估计语音基音频率,同时确定语音和噪声频率点,对待语音频率点和噪声频率点分别调整维纳滤波器的参数在滤除噪声的同时对语音频率点尽可能的保留从而减少语音失真。实验结果表明,与现有的双麦克风消噪系统相比,本系统在对噪声进行抑制的同时能够有效减少消噪算法对语音造成的损害,提高了手机的通话质量,对于方向性的语音干扰也能起到很好的抑制效果。 |
英文摘要: |
Existing dual microphone speech enhancement systems causes voice degradation under some complicated noise environments in handset applications. In order to solve this problem, this paper proposes a new dual microphone speech enhancement system. The system proposes an improved pitch frequency estimate by combining both time and frequency processing, and further accurately detects both bin-wise speech and noise and then controls the parameters of Winner filter to get less voice degradation and more noise suppression. Experiments demonstrates the improved performance. |
DOI:10.11684/j.issn.1000-310X.2017.01.006 |
中文关键词: 手机,双麦克风,语音增强,噪声估计 |
英文关键词: Handset, Dual-microphone, Speech enhancement, .Noise estimate |
基金项目:新一代智能手机多麦克风消噪音频测试与辅助设计系统关键技术研究 项目编号:BE2014139 |
|
摘要点击次数: 2131 |
全文下载次数: 3271 |
查看全文
查看/发表评论 下载PDF阅读器 |
关闭 |