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1. 发明专利

JP2007096418A Separation method of a plurality of sound sources 有权
标题翻译：多种声源的分离方法
公开(公告)号：JP2007096418A
公开(公告)日：2007-04-12
申请号：JP2005279512
申请日：2005-09-27
申请人： Chubu Electric Power Co Inc , Kumagai Gumi Co Ltd , Takahiro Yamashita , 中部電力株式会社 , 恭弘山下 , 株式会社熊谷組
发明人： NAKAJIMA JUNJI , ASAI YUJI , OWAKI MASANAO , ZAIMA TAKESHI , YAMASHITA TAKAHIRO
IPC分类号： H04R1/40 , H04R3/00
摘要： PROBLEM TO BE SOLVED: To provide a method of accurately separating directions of a plurality of sound sources or a direction of a direct sound and a direction of a reflected sound even when the plural sound sources exist or the effect of the reflected sound is great. SOLUTION: Sound vectors A5, B5 from each of sound sources and picked up by a reference microphone M5 are estimated under the condition that a sound vector representing an observed sound picked up by each microphone is represented by a sound vector of sound from each sound source, the magnitude of which represents the amplitude of the sound from each sound source with respect to the amplitude of the observed sound picked up by the reference microphone and the phase angle of which is a phase difference with respect to the observed sound. Directions of the sound sources A, B are estimated by using the sound vectors A5, B5, new sound vectors from the estimated sound source A are obtained, sound vectors A5, B5 resulting from minimizing differences between the new sound vectors and the estimated sound vectors are particularized, and directions of the sound sources A, B estimated by using the particularized sound vectors A5, B5 are used for the directions of the sound sources A, B. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使当存在多个声源或者反射的声音的效果时，提供准确地分离多个声源的方向或者直接声音的方向和反射声的方向的方法是很棒的。解决方案：在每个麦克风拾取的观测声音的声音矢量由声音的声音矢量表示的条件下，估计来自每个声源并由参考麦克风M5拾取的声音矢量A5，B5 每个声源，其大小表示来自每个声源的声音相对于由参考麦克风拾取的观察声音的幅度的幅度，并且其相位角相对于观察到的声音是相位差。通过使用声音矢量A5，B5来估计声源A，B的方向，得到来自估计声音源A的新的声音矢量，由最小化新声音矢量与估计声音矢量之间的差异产生的声音矢量A5，B5 被特定化，并且通过使用特定声音矢量A5，B5估计的声源A，B的方向用于声源A，B的方向。（C）2007，JPO和INPIT

2. 发明专利

JP2007093251A Simulation method for noise countermeasure 有权
标题翻译：噪声计数模拟方法
公开(公告)号：JP2007093251A
公开(公告)日：2007-04-12
申请号：JP2005279518
申请日：2005-09-27
申请人： Chubu Electric Power Co Inc , Kumagai Gumi Co Ltd , Takahiro Yamashita , 中部電力株式会社 , 恭弘山下 , 株式会社熊谷組
发明人： NAKAJIMA JUNJI , ASAI YUJI , OWAKI MASANAO , ZAIMA TAKESHI , YAMASHITA TAKAHIRO
IPC分类号： G01H3/00 , H04R1/40 , H04R3/00
摘要： PROBLEM TO BE SOLVED: To provide a simulation method for a noise countermeasure capable of separating accurately positions and directions of a plurality of noise sources to simulate a sound insulation effect of a sound insulating wall, even when the plurality of noise sources exist. SOLUTION: The directions of the respective sound sources A, B are separated using a method of separating the plurality of sound sources by imagining sound vectors A5, B5 from the respective sound sources input into a reference microphone M5 to estimate the directions of the respective sound sources A, B, in assumption that a level of the sound vector expressing an observed sound of each microphone expresses a level of an amplitude of a sound from the sound source with respect to an amplitude of the observed sound input into the microphone serving as a reference, and in assumption that a phase angle thereof expresses a phase difference with respect to the observed sound, when simulating levels of the arrived sounds from the plurality of noise sources, and levels of the noises from the plurality of sound sources A, B are respectively calculated thereafter to simulate the effect of the sound insulating wall. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供能够精确地分离多个噪声源的位置和方向的模拟噪声对策的模拟方法，以模拟隔音壁的隔音效果，即使存在多个噪声源。解决方案：使用通过将来自输入到参考麦克风M5的各个声源的声音矢量A5，B5进行分离来分离多个声源的方法来分离各声源A，B的方向，相应的声源A，B，假设表示每个麦克风的观测声音的声音矢量的电平相对于输入到麦克风的观察声音的幅度表示来自声源的声音的幅度的水平作为参考，并且假定相位角相对于观察到的声音表示相位差，当模拟来自多个噪声源的到达声音的电平以及来自多个声源A的噪声的电平之后分别计算出B，以模拟隔音壁的效果。版权所有（C）2007，JPO＆INPIT

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