公开(公告)号：US20150312663A1

公开(公告)日：2015-10-29

申请号：US14440211

申请日：2013-09-17

Applicant: ANALOG DEVICES, INC.

Inventor： Johannes Traa ,  Paris Smaragdis

IPC: H04R1/08 ,  H04R3/04

CPC classification number: H04R1/08 ,  G10L21/0272 ,  G10L21/028 ,  G10L21/0308 ,  G10L25/18 ,  G10L2021/02161 ,  H04R3/04 ,  H04R2430/00

Abstract: An approach to separating multiple sources exploits the observation that each source is associated with a linear-circular phase characteristic in which the relative phase between pairs of microphones follows a linear (modulo) pattern. In some examples, a modified RANSAC (Random Sample Consensus) approach is used to identify the frequency/phase samples that are attributed to each source. In some examples, either in combination with the modified RANSAC approach or using other approaches, a wrapped variable representation is used to represent a probability density of phase, thereby avoiding a need to “unwrap” phase in applying probabilistic techniques to estimating delay between sources.

Abstract translation: 分离多个源的方法利用每个源与线性圆相位特性相关联的观察结果，其中麦克风对之间的相对相位遵循线性（模）模式。 在一些示例中，使用经修改的RANSAC（随机样本共识）方法来识别归因于每个源的频率/相位样本。 在一些示例中，结合修改的RANSAC方法或使用其他方法，使用包装的可变表示来表示相位的概率密度，从而避免在应用概率技术来估计源之间的延迟时需要“展开”相位。