公开(公告)号：US09668048B2

公开(公告)日：2017-05-30

申请号：US15011287

申请日：2016-01-29

Applicant: Knowles Electronics, LLC

Inventor： Shailesh Sakri ,  Ajay Kumar Dhanapalan ,  Harsha Inna Kedage Rao

IPC: H04R29/00 ,  H04B3/20 ,  A61F11/06 ,  G10K11/16 ,  H03B29/00 ,  H04R3/00 ,  H04M9/08

CPC classification number: H04R3/005 ,  H04M9/08 ,  H04R2410/05 ,  H04R2499/11

Abstract: Provided are systems and methods for contextual switching of microphones in audio devices. An example method includes detecting a change in conditions for capturing an acoustic signal by at least two microphones. A configuration is associated with the at least two microphones. The example method provides determining that the change in conditions has been stable for a pre-determined period of time. In response to the determination, the method changes the configuration associated with the at least two microphones. The conditions may include an absence or presence of far-end speech, reverberation, low/high signal-to-noise ratio, low/high signal-to-echo ratio, type of background noise, and so on. The changing of the configuration includes assigning a primary microphone and a secondary microphone based on a change in conditions. Based on the changed configuration, tuning parameters may be adjusted for noise suppression and acoustic echo cancellation.

公开(公告)号：US20160227336A1

公开(公告)日：2016-08-04

申请号：US15011287

申请日：2016-01-29

Applicant: Knowles Electronics, LLC

Inventor： Shailesh Sakri ,  Ajay Kumar Dhanapalan ,  Harsha Inna Kedage Rao

IPC: H04R29/00 ,  H04R3/00

CPC classification number: H04R3/005 ,  H04M9/08 ,  H04R2410/05 ,  H04R2499/11

Abstract: Provided are systems and methods for contextual switching of microphones in audio devices. An example method includes detecting a change in conditions for capturing an acoustic signal by at least two microphones. A configuration is associated with the at least two microphones. The example method provides determining that the change in conditions has been stable for a pre-determined period of time. In response to the determination, the method changes the configuration associated with the at least two microphones. The conditions may include an absence or presence of far-end speech, reverberation, low/high signal-to-noise ratio, low/high signal-to-echo ratio, type of background noise, and so on. The changing of the configuration includes assigning a primary microphone and a secondary microphone based on a change in conditions. Based on the changed configuration, tuning parameters may be adjusted for noise suppression and acoustic echo cancellation.

Abstract translation: 提供了用于音频设备中麦克风的背景切换的系统和方法。 示例性方法包括通过至少两个麦克风来检测用于捕获声信号的条件变化。 配置与至少两个麦克风相关联。 该示例方法提供确定条件的变化在预定时间段内是稳定的。 响应于该确定，该方法改变与至少两个麦克风相关联的配置。 条件可能包括远端语音的缺失或存在，混响，低/高信噪比，低/高信号与回波比，背景噪声类型等。 配置的改变包括基于条件的改变来分配主麦克风和次麦克风。 基于改变的配置，可以调整调谐参数用于噪声抑制和声学回声消除。