Microphone array noise suppression using noise field isotropy estimation
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United States of America Patent
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Jan 22, 2019
Grant Date -
Jan 11, 2018
app pub date -
Apr 29, 2015
filing date -
Apr 29, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
Noise is suppressed from a microphone array by estimating a noise field isotropy. In some examples audio is received from a plurality of microphones. A power spectral density of a beamformer output is determined and a power spectral density of microphone noise differences is determined. A noise power spectral density is determined using a transfer function and the noise power spectral density is applied to the beamformer output power spectral density to produce a power spectral density output of the received audio with reduced noise.
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| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| WO | A1 | WO2016174491 | Apr 29, 2015 |
International Classification(s)
- 2015 Application Filing Year
- G10L Class
- 2237 Applications Filed
- 1849 Patents Issued To-Date
- 82.66 % Issued To-Date
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Patent Citation Ranking
- 0 Citation Count
- G10L Class
- 0 % this patent is cited more than
- 6 Age
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