Invention Grant
US08494177B2 Virtual microphone array systems using dual omindirectional microphone array (DOMA) 有权
使用双向定向麦克风阵列(DOMA)的虚拟麦克风阵列系统

  • Patent Title: Virtual microphone array systems using dual omindirectional microphone array (DOMA)
  • Patent Title (中): 使用双向定向麦克风阵列(DOMA)的虚拟麦克风阵列系统
  • Application No.: US12139355
    Application Date: 2008-06-13
  • Publication No.: US08494177B2
    Publication Date: 2013-07-23
  • Inventor: Gregory C. Burnett
  • Applicant: Gregory C. Burnett
  • Applicant Address: US CA San Francisco
  • Assignee: AliphCom
  • Current Assignee: AliphCom
  • Current Assignee Address: US CA San Francisco
  • Agency: Kokka & Backus, PC
  • Main IPC: H04R3/00
  • IPC: H04R3/00
Virtual microphone array systems using dual omindirectional microphone array (DOMA)
Abstract:
A dual omnidirectional microphone array noise suppression is described. Compared to conventional arrays and algorithms, which seek to reduce noise by nulling out noise sources, the array of an embodiment is used to form two distinct virtual directional microphones which are configured to have very similar noise responses and very dissimilar speech responses. The only null formed is one used to remove the speech of the user from V2. The two virtual microphones may be paired with an adaptive filter algorithm and VAD algorithm to significantly reduce the noise without distorting the speech, significantly improving the SNR of the desired speech over conventional noise suppression systems.
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