公开(公告)号：US20160094910A1

公开(公告)日：2016-03-31

申请号：US14957447

申请日：2015-12-02

Applicant: Audience, Inc.

Inventor： Harinarayanan Erumbi Vallabhan ,  Shailesh Sakri ,  Carlos Avendano ,  Ludger Solbach

IPC: H04R1/40

CPC classification number: H04R3/005 ,  H04M1/03 ,  H04R2201/405 ,  H04R2430/20 ,  H04R2430/21

Abstract: Systems and methods for improving performance of a directional audio capture system are provided. An example method includes correlating phase plots of at least two audio inputs, with the audio inputs being captured by at least two microphones. The method can further include generating, based on the correlation, estimates of salience at different directional angles to localize a direction of a source of sound. The method can allow providing cues to the directional audio capture system based on the estimates. The cues include attenuation levels. A rate of change of the levels of attenuation is controlled by attack and release time constants to avoid sound artifacts. The method also includes determining a mode based on an absence or presence of one or more peaks in the estimates of salience. The method also provides for configuring the directional audio capture system based on the determined mode.

Abstract translation: 提供了用于改善定向音频捕获系统的性能的系统和方法。 示例性方法包括将至少两个音频输入的相位图相关联，音频输入被至少两个麦克风捕获。 该方法还可以包括基于相关性在不同方向角度产生显着性的估计，以定位声源的方向。 该方法可以基于估计来允许向定向音频捕获系统提供线索。 提示包括衰减水平。 衰减水平的变化率由攻击和释放时间常数控制，以避免声音伪影。 该方法还包括基于在显着性估计中缺少或存在一个或多个峰值来确定模式。 该方法还提供了基于确定的模式来配置定向音频捕获系统。