AUDIO ACQUISITION SYSTEMS AND METHODS
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United States of America Patent
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Issued Date -
Jun 13, 2013
app pub date -
Dec 10, 2011
filing date -
Dec 10, 2011
priority date (Note) -
Abandoned
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Abstract
Audio acquisition systems and methods to determine a direction of arrival of an audio signal are disclosed. In an embodiment, an apparatus includes a continuous sampling stage configured to receive audio information and to generate one or more correlations from the received audio information, and a processing stage configured to receive the one or more correlations and to generate direction of arrival information for the audio information. In another embodiment, a method includes generating audio signals from an ambient acoustic environment, and performing beamforming on the generated audio signals. The method further includes calculating signal-to-interference ratios from the beamformed signals, forming correlations between the signal-to-interference ratios and audio sampling angles, selecting at least one correlation based upon predetermined selection criteria, and determining a direction of arrival for the audio signals.
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