Invention Grant
- Patent Title: Directional audio capture
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Application No.: US14957447Application Date: 2015-12-02
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Publication No.: US09838784B2Publication Date: 2017-12-05
- Inventor: Harinarayanan Erumbi Vallabhan , Shailesh Sakri , Carlos Avendano , Ludger Solbach
- Applicant: Knowles Electronics, LLC
- Applicant Address: US IL Itasca
- Assignee: Knowles Electronics, LLC
- Current Assignee: Knowles Electronics, LLC
- Current Assignee Address: US IL Itasca
- Agency: Foley & Lardner LLP
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H04M1/03

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.
Public/Granted literature
- US20160094910A1 DIRECTIONAL AUDIO CAPTURE Public/Granted day:2016-03-31
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