摘要响鼾是阻塞性睡眠呼吸暂停低通气综合症（0SAHS）患者最早出现和最为突出的症状之一。存在一种设想，将鼾声信号分离为声源信号和上呼吸道冲激响应。二者可能会分别含有振动器官和阻塞部位的相关信息。这种鼾声信号分解方案源自语音合成理论，其可行性并未得到严格验证，而传声器阵列系统正是做此验证的有力手段。在对60组实测OSAHS患者的鼾声片段分解结果进行比较和分析后，我们发现此分解方案中鼾声声源信号的一致性较高，具有直接提取相关特征来研究鼾声振动部位识别的可能性，而上呼吸道对应的声学滤波器模型所显现的变化较为复杂，还需进一步研究不同鼾声片段分解后的共有特征和规律。19791
关键词 鼾声 逆滤波 传声器阵列
毕业论文设计说明书（论文）外文摘要
Title Analysis of Snore Signal Model Based on Microphone Array
Abstract
Snoring is one of the earliest and most prominent symptoms of obstructive sleep apnea -hypopnea syndrome (0SAHS) in patients. There is an assumption that the snoring source signal and the impulse response of the upper airway can be separated from the snore signal .They may be helpful in determining the vibration organs and parts of the non-contact obstruction respectively. This snore signal decomposition scheme comes from speech synthesis theory. Its feasibility has not been rigorously verified, and microphone array system is a powerful tool to do this validation. After the decomposed results of sixty snoring fragments of OSAHS patients were compared and analyzed, we found that snoring sound source, obtained from the decomposition scheme, have the high consistency. It may be used to extract relevant characteristics directly，which is beneficial in the recognition of the vibration organ of snoring. However, as the acoustic model filter corresponding to the upper airway appears more complex changes , further study is needed to obtain the common characteristics and laws in decomposed results of different snoring fragments.
Keywords snore inverse filter microphone array
目 次
1 引言1
1.1研究背景及意义1
1.2 国内外研究现状 1
1.3 主要工作及结构安排 2
2 鼾声与阻塞性睡眠呼吸暂停低通气综合征 4
2.1鼾声的发声机理4
2.2 OSAHS患者的常见症状和诊断标准4
2.3 OSAHS患者的鼾声特点4
3 鼾声的采集与分解 7
3.1鼾声采集介绍7
3.2 鼾声的逆滤波分解方法8
3.3 TKK分解包的的使用 11
4 鼾声声源信号分析 15
4.1 鼾声声源信号的基频估计方法 15
4.2 鼾声声源信号空间相关性研究 17
4.3 鼾声声源信号空间定位能力分析 20
5 上呼吸道逆滤波模型分析23
5.1 上呼吸道滤波器冲激响应空间相关性研究 23
5.2 上呼吸道滤波器幅频响应空间相关性研究 25
5.3共振峰位置空间相似性研究 27
结论 28
致谢 29
参考文献30
附录 32
1 引言
1．1 研究背景及意义
鼾声是睡眠时上气道发出的特殊声音，由咽部组织的振动产生，典型的鼾声在吸气相出现，偶尔在呼气相也会产生一个较小的成分[1]。打鼾是由咽结构的振动活动引起的。打鼾过程中上气道结构的内窥镜评估表明有软腭的颤振，这种颤振可能与由其它结构产生的噪声相结合，如扁桃体，舌根和会厌的振动相结合的颤振。打鼾发生在睡眠中，在此期间，上气道处于被动状态[16]。 基于传声器阵列的鼾声信号模型分析:http://www.youerw.com/tongxin/lunwen_11308.html