×

Signal source separation

  • US 9,460,732 B2
  • Filed: 12/23/2013
  • Issued: 10/04/2016
  • Est. Priority Date: 02/13/2013
  • Status: Active Grant
First Claim
Patent Images

1. An audio signal separation system for signal separation according to source in an acoustic signal, the system comprising:

  • a micro-electrical-mechanical system (MEMS) microphone unit includinga plurality of acoustic ports, each port for sensing an acoustic environment at a spatial location relative to microphone unit, a minimum spacing between the spatial locations being less than 3 millimeters,a plurality of microphone elements, each coupled to an acoustic port of the plurality of acoustic ports to acquire a signal based on an acoustic environment at the spatial location of said acoustic port, andcircuitry coupled to the microphone elements configured to provide one or more microphone signals together representing a representative acquired signal and a variation among the signals acquired by the microphone elements; and

    an audio processor configured to process the one or more microphone signals from the microphone unit to output one or more separated signals comprising signals separated according to corresponding one or more sources of said signals from the representative acquired signal,wherein the audio processor is configured to process the one or more microphone signals using direction of arrival information determined from the variation among the acquired signals and using signal structure of the one or more sources.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×